diff --git a/CMakeLists.txt b/CMakeLists.txt
index bda523b..fe42f12 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,7 +58,7 @@ set(CPACK_PACKAGE_DESCRIPTION "IoT guitar effect pedal for Raspberry Pi, with ph
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "IoT guitar effect for Raspberry Pi")
 set(CPACK_DEBIAN_PACKAGE_SECTION non-free/sound)
 set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
-set(CPACK_DEBIAN_PACKAGE_PREDEPENDS hostapd)
+set(CPACK_DEBIAN_PACKAGE_PREDEPENDS hostapd authbind )
 set(CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION TRUE)
 set(CPACK_PACKAGING_INSTALL_PREFIX /usr/local)
 set(CPACK_PROJECT_NAME ${PROJECT_NAME})
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0fdea7b..87d85c6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -57,13 +57,13 @@ set(CMAKE_CXX_STANDARD_REQUIRED True)
 if (CMAKE_BUILD_TYPE MATCHES Debug)
     message(STATUS "Debug build")
 
-    set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-Wno-psabi -fsanitize=address -static-libasan -O0 -DDEBUG" )
+    set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-Wno-psabi -fsanitize=address -static-libasan -O0 -DDEBUG -Werror" )
 elseif(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
     message(STATUS "RelWithgDebInfo build")
-    set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-Wno-psabi" )
+    set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-Wno-psabi -Werror" )
 else()
     message(STATUS "Release build")
-    set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-Wno-psabi" )
+    set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-Wno-psabi -Werror" )
 endif()
 
 
@@ -182,6 +182,7 @@ add_executable(pipedalconfig json.cpp json.hpp
     SystemConfigFile.hpp SystemConfigFile.cpp
     SysExec.hpp SysExec.cpp
     asan_options.cpp
+    Lv2Log.cpp Lv2Log.hpp
     )
 
 target_link_libraries(pipedalconfig PRIVATE pthread atomic stdc++fs
diff --git a/src/ConfigMain.cpp b/src/ConfigMain.cpp
index 3b2691f..050cd24 100644
--- a/src/ConfigMain.cpp
+++ b/src/ConfigMain.cpp
@@ -38,8 +38,8 @@ using namespace pipedal;
 #define SERVICE_ACCOUNT_NAME "pipedal_d"
 #define SERVICE_GROUP_NAME "pipedal_d"
 #define JACK_SERVICE_ACCOUNT_NAME "jack"
-#define JACK_SERVICE_GROUP_NAME "jack"
 #define AUDIO_SERVICE_GROUP_NAME "audio"
+#define JACK_SERVICE_GROUP_NAME AUDIO_SERVICE_GROUP_NAME
 
 #define SYSTEMCTL_BIN "/usr/bin/systemctl"
 #define GROUPADD_BIN "/usr/sbin/groupadd"
@@ -86,22 +86,22 @@ std::filesystem::path findOnPath(const std::string &command)
 
 void EnableService()
 {
-    if (SysExec(SYSTEMCTL_BIN " enable " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
+    if (sysExec(SYSTEMCTL_BIN " enable " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
     {
         cout << "Error: Failed to enable the " NATIVE_SERVICE " service.";
     }
-    if (SysExec(SYSTEMCTL_BIN " enable " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
+    if (sysExec(SYSTEMCTL_BIN " enable " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
     {
         cout << "Error: Failed to enable the " SHUTDOWN_SERVICE " service.";
     }
 }
 void DisableService()
 {
-    if (SysExec(SYSTEMCTL_BIN " disable " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
+    if (sysExec(SYSTEMCTL_BIN " disable " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
     {
         cout << "Error: Failed to disable the " NATIVE_SERVICE " service.";
     }
-    if (SysExec(SYSTEMCTL_BIN " disable " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
+    if (sysExec(SYSTEMCTL_BIN " disable " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
     {
         cout << "Error: Failed to disable the " SHUTDOWN_SERVICE " service.";
     }
@@ -109,18 +109,18 @@ void DisableService()
 
 void StopService(bool excludeShutdownService = false)
 {
-    if (SysExec(SYSTEMCTL_BIN " stop " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
+    if (sysExec(SYSTEMCTL_BIN " stop " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
     {
         cout << "Error: Failed to stop the " NATIVE_SERVICE " service.";
     }
     if (!excludeShutdownService)
     {
-        if (SysExec(SYSTEMCTL_BIN " stop " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
+        if (sysExec(SYSTEMCTL_BIN " stop " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
         {
             cout << "Error: Failed to stop the " SHUTDOWN_SERVICE " service.";
         }
     }
-    if (SysExec(SYSTEMCTL_BIN " stop " JACK_SERVICE ".service") != EXIT_SUCCESS)
+    if (sysExec(SYSTEMCTL_BIN " stop " JACK_SERVICE ".service") != EXIT_SUCCESS)
     {
         throw PiPedalException("Failed to stop the " JACK_SERVICE " service.");
     }
@@ -130,22 +130,25 @@ void Uninstall()
 {
     StopService();
     DisableService();
-    system(SYSTEMCTL_BIN " stop jack");
-    system(SYSTEMCTL_BIN " disable jack");
+    silentSysExec(SYSTEMCTL_BIN " stop jack");
+    silentSysExec(SYSTEMCTL_BIN " disable jack");
+    std::filesystem::remove("/usr/bin/systemd/system/" SHUTDOWN_SERVICE ".service");
+    std::filesystem::remove("/usr/bin/systemd/system/" NATIVE_SERVICE ".service");
+    std::filesystem::remove("/usr/bin/systemd/system/" JACK_SERVICE ".service");
 }
 
 void StartService(bool excludeShutdownService = false)
 {
 
-    SilentSysExec("/usr/bin/pulseaudio --kill"); // interferes with Jack audio service startup.
+    silentSysExec("/usr/bin/pulseaudio --kill"); // interferes with Jack audio service startup.
     if (!excludeShutdownService)
     {
-        if (SysExec(SYSTEMCTL_BIN " start " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
+        if (sysExec(SYSTEMCTL_BIN " start " SHUTDOWN_SERVICE ".service") != EXIT_SUCCESS)
         {
             throw PiPedalException("Failed to start the " SHUTDOWN_SERVICE " service.");
         }
     }
-    if (SysExec(SYSTEMCTL_BIN " start " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
+    if (sysExec(SYSTEMCTL_BIN " start " NATIVE_SERVICE ".service") != EXIT_SUCCESS)
     {
         throw PiPedalException("Failed to start the " NATIVE_SERVICE " service.");
     }
@@ -153,7 +156,7 @@ void StartService(bool excludeShutdownService = false)
     serverSettings.ReadJackConfiguration();
     if (serverSettings.IsValid())
     {
-        if (SysExec(SYSTEMCTL_BIN " start " JACK_SERVICE ".service") != EXIT_SUCCESS)
+        if (sysExec(SYSTEMCTL_BIN " start " JACK_SERVICE ".service") != EXIT_SUCCESS)
         {
             throw PiPedalException("Failed to start the " JACK_SERVICE " service.");
         }
@@ -195,7 +198,7 @@ static bool userExists(const char *userName)
 
 void InstallPamEnv()
 {
-    std::string newLine = "JACK_PROMISCOUS_SERVER      DEFAULT=jack";
+    std::string newLine = "JACK_PROMISCUOUS_SERVER      DEFAULT=" JACK_SERVICE_GROUP_NAME;
     std::vector<std::string> lines;
     std::filesystem::path path = "/etc/security/pam_env.conf";
     try
@@ -248,7 +251,7 @@ void InstallPamEnv()
 
 void InstallLimits()
 {
-    if (SysExec(GROUPADD_BIN " -f " AUDIO_SERVICE_GROUP_NAME) != EXIT_SUCCESS)
+    if (sysExec(GROUPADD_BIN " -f " AUDIO_SERVICE_GROUP_NAME) != EXIT_SUCCESS)
     {
         throw PiPedalException("Failed to create audio service group.");
     }
@@ -270,34 +273,34 @@ void MaybeStartJackService()
 
     if (std::filesystem::exists(drcFile) && std::filesystem::file_size(drcFile) != 0)
     {
-        system(SYSTEMCTL_BIN " start jack");
+        sysExec(SYSTEMCTL_BIN " start jack");
     }
     else
     {
-        system(SYSTEMCTL_BIN " mask jack");
+        silentSysExec(SYSTEMCTL_BIN " mask jack");
     }
 }
 void InstallJackService()
 {
     InstallLimits();
     InstallPamEnv();
-    if (SysExec(GROUPADD_BIN " -f " JACK_SERVICE_GROUP_NAME) != EXIT_SUCCESS)
+    if (sysExec(GROUPADD_BIN " -f " JACK_SERVICE_GROUP_NAME) != EXIT_SUCCESS)
     {
         throw PiPedalException("Failed to create jack service group.");
     }
     if (!userExists(JACK_SERVICE_ACCOUNT_NAME))
     {
-        if (SysExec(USERADD_BIN " " JACK_SERVICE_ACCOUNT_NAME " -g " JACK_SERVICE_GROUP_NAME " -M -N -r") != EXIT_SUCCESS)
+        if (sysExec(USERADD_BIN " " JACK_SERVICE_ACCOUNT_NAME " -g " JACK_SERVICE_GROUP_NAME " -M -N -r") != EXIT_SUCCESS)
         {
             //  throw PiPedalException("Failed to create service account.");
         }
         // lock account for login.
-        SysExec("passwd -l " JACK_SERVICE_ACCOUNT_NAME);
+        silentSysExec("passwd -l " JACK_SERVICE_ACCOUNT_NAME);
     }
 
     // Add to audio groups.
-    SysExec(USERMOD_BIN " -a -G " JACK_SERVICE_GROUP_NAME " " JACK_SERVICE_ACCOUNT_NAME);
-    SysExec(USERMOD_BIN " -a -G" AUDIO_SERVICE_GROUP_NAME " " JACK_SERVICE_ACCOUNT_NAME);
+    // sysExec(USERMOD_BIN " -a -G " JACK_SERVICE_GROUP_NAME " " JACK_SERVICE_ACCOUNT_NAME);
+    sysExec(USERMOD_BIN " -a -G" AUDIO_SERVICE_GROUP_NAME " " JACK_SERVICE_ACCOUNT_NAME);
 
     // deploy the systemd service file
     std::map<std::string, std::string> map; // nothing to customize.
@@ -309,6 +312,10 @@ void InstallJackService()
 
 void Install(const std::filesystem::path &programPrefix, const std::string endpointAddress)
 {
+    if (sysExec(GROUPADD_BIN " -f " AUDIO_SERVICE_GROUP_NAME) != EXIT_SUCCESS)
+    {
+        throw PiPedalException("Failed to create audio service group.");
+    }
 
     InstallJackService();
     auto endpos = endpointAddress.find_last_of(':');
@@ -341,23 +348,23 @@ void Install(const std::filesystem::path &programPrefix, const std::string endpo
 
     // Create and configure service account.
 
-    if (SysExec(GROUPADD_BIN " -f " SERVICE_GROUP_NAME) != EXIT_SUCCESS)
+    if (sysExec(GROUPADD_BIN " -f " SERVICE_GROUP_NAME) != EXIT_SUCCESS)
     {
         throw PiPedalException("Failed to create service group.");
     }
+
     if (!userExists(SERVICE_ACCOUNT_NAME))
     {
-        if (SysExec(USERADD_BIN " " SERVICE_ACCOUNT_NAME " -g " SERVICE_GROUP_NAME " -M -N -r") != EXIT_SUCCESS)
+        if (sysExec(USERADD_BIN " " SERVICE_ACCOUNT_NAME " -g " SERVICE_GROUP_NAME " -M -N -r") != EXIT_SUCCESS)
         {
             //  throw PiPedalException("Failed to create service account.");
         }
         // lock account for login.
-        SysExec("passwd -l " SERVICE_ACCOUNT_NAME);
+        silentSysExec("passwd -l " SERVICE_ACCOUNT_NAME);
     }
 
     // Add to audio groups.
-    SysExec(USERMOD_BIN " -a -G jack " SERVICE_ACCOUNT_NAME);
-    SysExec(USERMOD_BIN " -a -G audio " SERVICE_ACCOUNT_NAME);
+    sysExec(USERMOD_BIN " -a -G  " AUDIO_SERVICE_GROUP_NAME " " SERVICE_ACCOUNT_NAME);
 
     // create and configure /var directory.
 
@@ -367,51 +374,55 @@ void Install(const std::filesystem::path &programPrefix, const std::string endpo
     {
         std::stringstream s;
         s << CHGRP_BIN " " SERVICE_GROUP_NAME " " << varDirectory.c_str();
-        SysExec(s.str().c_str());
+        sysExec(s.str().c_str());
     }
     {
         std::stringstream s;
         s << CHOWN_BIN << " " << SERVICE_ACCOUNT_NAME << " " << varDirectory.c_str();
-        SysExec(s.str().c_str());
+        sysExec(s.str().c_str());
     }
 
     {
         std::stringstream s;
         s << CHMOD_BIN << " 775 " << varDirectory.c_str();
-        SysExec(s.str().c_str());
+        sysExec(s.str().c_str());
     }
     {
         std::stringstream s;
         s << CHMOD_BIN << " g+s " << varDirectory.c_str(); // child files/directories inherit ownership.
-        SysExec(s.str().c_str());
+        sysExec(s.str().c_str());
     }
 
     // authbind port.
 
     if (authBindRequired)
     {
+        std::filesystem::create_directories("/etc/authbind/byport");
         std::filesystem::path portAuthFile = std::filesystem::path("/etc/authbind/byport") / strPort;
 
         {
             // create it.
             std::ofstream f(portAuthFile);
+            if (!f.is_open()) {
+                throw PiPedalException("Failed to create " + portAuthFile.string());
+            }
         }
         {
             // own it.
             std::stringstream s;
             s << CHOWN_BIN << " " SERVICE_ACCOUNT_NAME " " << portAuthFile.c_str();
-            SysExec(s.str().c_str());
+            sysExec(s.str().c_str());
         }
         {
             // group own it.
             std::stringstream s;
             s << CHGRP_BIN << " " SERVICE_GROUP_NAME " " << portAuthFile.c_str();
-            SysExec(s.str().c_str());
+            sysExec(s.str().c_str());
         }
         {
             std::stringstream s;
             s << CHMOD_BIN << " 770 " << portAuthFile.c_str();
-            SysExec(s.str().c_str());
+            sysExec(s.str().c_str());
         }
     }
 
@@ -448,7 +459,7 @@ void Install(const std::filesystem::path &programPrefix, const std::string endpo
     }
     WriteTemplateFile(map, std::filesystem::path("/etc/pipedal/templateShutdown.service"), GetServiceFileName(SHUTDOWN_SERVICE));
 
-    SysExec(SYSTEMCTL_BIN " daemon-reload");
+    sysExec(SYSTEMCTL_BIN " daemon-reload");
 
     cout << "Starting service" << endl;
     RestartService(false);
@@ -607,7 +618,7 @@ int main(int argc, char **argv)
         std::string pkexec = "/usr/bin/pkexec"; // staged because "ISO C++ forbids converting a string constant to std::vector<char*>::value_type"(!)
         args.push_back((char *)(pkexec.c_str()));
 
-        std::string sPath = GetSelfExePath();
+        std::string sPath = getSelfExePath();
         args.push_back(const_cast<char *>(sPath.c_str()));
         for (int arg = 1; arg < argc; ++arg)
         {
diff --git a/src/JackServerSettings.cpp b/src/JackServerSettings.cpp
index aa8c218..966f582 100644
--- a/src/JackServerSettings.cpp
+++ b/src/JackServerSettings.cpp
@@ -25,6 +25,8 @@
 #include <string>
 #include "unistd.h"
 #include <filesystem>
+#include "Lv2Log.hpp"
+#include "SysExec.hpp"
 
 #define DRC_FILENAME "/etc/jackdrc"
 
@@ -205,7 +207,7 @@ void JackServerSettings::Write()
         {
             // jack1 incantation for promiscuous servers.
             output << "#!/bin/sh" <<endl;
-            output << "export JACK_PROMISCUOUS_SERVER=jack" << endl;
+            output << "export JACK_PROMISCUOUS_SERVER=audio" << endl;
             output << "export JACK_NO_AUDIO_RESERVATION=1" << endl;
             output << "umask 0" << endl;
         }
@@ -222,9 +224,10 @@ void JackServerSettings::Write()
             << " -p" << this->bufferSize_ 
             << " -n" << this->numberOfBuffers_ << " -Xseq" 
             << endl;
-        system("/usr/bin/chmod 755 " DRC_FILENAME);
-        system("/usr/bin/systemctl unmask jack");
-        system("/usr/bin/systemctl enable jack");
+        if (silentSysExec("/usr/bin/chmod 755 " DRC_FILENAME) != 0)
+        {
+            Lv2Log::error("Failed to set permissions on /etc/jackdrc");
+        }
     }
     catch (const std::exception &e)
     {
diff --git a/src/PiPedalModel.cpp b/src/PiPedalModel.cpp
index bfe0fad..7942c15 100644
--- a/src/PiPedalModel.cpp
+++ b/src/PiPedalModel.cpp
@@ -880,7 +880,6 @@ void PiPedalModel::SetJackServerSettings(const JackServerSettings &jackServerSet
     this->jackServerSettings = jackServerSettings;
 
 
-
     // take a snapshot incase a client unsusbscribes in the notification handler (in which case the mutex won't protect us)
     IPiPedalModelSubscriber **t = new IPiPedalModelSubscriber *[this->subscribers.size()];
     for (size_t i = 0; i < subscribers.size(); ++i)
@@ -896,6 +895,13 @@ void PiPedalModel::SetJackServerSettings(const JackServerSettings &jackServerSet
 
     if (ShutdownClient::CanUseShutdownClient())
     {
+
+        // save the current (edited) preset now in case the service shutdown isn't clean.
+        CurrentPreset currentPreset;
+        currentPreset.modified_ = this->hasPresetChanged;
+        currentPreset.preset_ = this->pedalBoard;
+        storage.SaveCurrentPreset(currentPreset);
+    
         this->jackConfiguration.SetIsRestarting(true);
         fireJackConfigurationChanged(this->jackConfiguration);
         this->jackHost->UpdateServerConfiguration(
diff --git a/src/PiPedalSocket.cpp b/src/PiPedalSocket.cpp
index ade926f..4389101 100644
--- a/src/PiPedalSocket.cpp
+++ b/src/PiPedalSocket.cpp
@@ -298,7 +298,7 @@ static void requestShutdown(bool restart)
         }
         s << " now";
 
-        if (SysExec(s.str().c_str()) != EXIT_SUCCESS)
+        if (sysExec(s.str().c_str()) != EXIT_SUCCESS)
         {
             Lv2Log::error("shutdown failed.");
             if (restart) {
diff --git a/src/SetWifiConfig.cpp b/src/SetWifiConfig.cpp
index 157f10d..79a4cdf 100644
--- a/src/SetWifiConfig.cpp
+++ b/src/SetWifiConfig.cpp
@@ -37,11 +37,11 @@ void pipedal::SetWifiConfig(const WifiConfigSettings&settings)
     char band;
     if (!settings.enable_)
     {
-        SysExec(SYSTEMCTL_BIN " stop hostapd");
-        SysExec(SYSTEMCTL_BIN " disable hostapd");
+        sysExec(SYSTEMCTL_BIN " stop hostapd");
+        sysExec(SYSTEMCTL_BIN " disable hostapd");
 
-        SysExec(SYSTEMCTL_BIN " enable wpa_supplicant");
-        SysExec(SYSTEMCTL_BIN " start wpa_supplicant");
+        sysExec(SYSTEMCTL_BIN " enable wpa_supplicant");
+        sysExec(SYSTEMCTL_BIN " start wpa_supplicant");
     } else {
         std::filesystem::path path("/etc/hostapd/hostapd.conf");
         SystemConfigFile apdConfig;
@@ -167,29 +167,29 @@ void pipedal::SetWifiConfig(const WifiConfigSettings&settings)
 
 
         // **************** start services ************
-        SysExec("rfkill unblock wlan");
-        SysExec(SYSTEMCTL_BIN " daemon-reload");
+        sysExec("rfkill unblock wlan");
+        sysExec(SYSTEMCTL_BIN " daemon-reload");
 
-        SysExec(SYSTEMCTL_BIN " mask wpa_supplicant");
-        SysExec(SYSTEMCTL_BIN " stop wpa_supplicant");
+        sysExec(SYSTEMCTL_BIN " mask wpa_supplicant");
+        sysExec(SYSTEMCTL_BIN " stop wpa_supplicant");
 
-        SysExec(SYSTEMCTL_BIN " unmask hostapd");
-        if (SysExec(SYSTEMCTL_BIN " restart hostapd") != 0)
+        sysExec(SYSTEMCTL_BIN " unmask hostapd");
+        if (sysExec(SYSTEMCTL_BIN " restart hostapd") != 0)
         {
             throw PiPedalException("Unable to start the access point.");
 
         }
-        if (SysExec("systemctl is-active --quiet hostapd") != 0)
+        if (sysExec("systemctl is-active --quiet hostapd") != 0)
         {
             throw PiPedalException("Unable to start the access point.");
         }
-        SysExec(SYSTEMCTL_BIN " enable hostapd");
+        sysExec(SYSTEMCTL_BIN " enable hostapd");
         
-        SysExec(SYSTEMCTL_BIN " stop wpa_supplicant");
-        SysExec(SYSTEMCTL_BIN " mask wpa_supplicant");
+        sysExec(SYSTEMCTL_BIN " stop wpa_supplicant");
+        sysExec(SYSTEMCTL_BIN " mask wpa_supplicant");
 
-        SysExec(SYSTEMCTL_BIN " restart dnsmasq");
-        SysExec(SYSTEMCTL_BIN " enable dnsmasq");
+        sysExec(SYSTEMCTL_BIN " restart dnsmasq");
+        sysExec(SYSTEMCTL_BIN " enable dnsmasq");
 
     }
 
diff --git a/src/ShutdownMain.cpp b/src/ShutdownMain.cpp
index a48cc48..58d82e2 100644
--- a/src/ShutdownMain.cpp
+++ b/src/ShutdownMain.cpp
@@ -87,7 +87,7 @@ void delayedRestartProc()
 {
     sleep(1); // give a chance for websocket messages to propagate.
     Lv2Log::error("Delayed Restart");
-    std::string pipedalConfigPath = std::filesystem::path(GetSelfExePath()).parent_path() / "pipedalconfig";
+    std::string pipedalConfigPath = std::filesystem::path(getSelfExePath()).parent_path() / "pipedalconfig";
 
     std::stringstream s;
      s << pipedalConfigPath.c_str() << " --restart --excludeShutdownService";
@@ -104,6 +104,9 @@ bool setJackConfiguration(JackServerSettings serverSettings)
 
     serverSettings.Write();
 
+    silentSysExec("/usr/bin/systemctl unmask jack");
+    silentSysExec("/usr/bin/systemctl enable jack");
+
     std::thread delayedRestartThread(delayedRestartProc);
     delayedRestartThread.detach();
     return true;
@@ -241,11 +244,11 @@ private:
 
             } else if (s == "shutdown")
             {
-                result = SysExec("/usr/sbin/shutdown -P now");
+                result = sysExec("/usr/sbin/shutdown -P now");
             }
             else if (s == "restart")
             {
-                result = SysExec("/usr/sbin/shutdown -r now");
+                result = sysExec("/usr/sbin/shutdown -r now");
             } else if (startsWith(s,"setJackConfiguration "))
             {
                 auto remainder = s.substr(strlen("setJackConfiguration "));
diff --git a/src/SplitEffect.hpp b/src/SplitEffect.hpp
index 21a8108..2c1d114 100644
--- a/src/SplitEffect.hpp
+++ b/src/SplitEffect.hpp
@@ -117,66 +117,66 @@ namespace pipedal
             }
         }
 
-        void AbTopMonoMono(uint32_t frames)
+        void abTopMonoMono(uint32_t frames)
         {
             Copy(this->inputs[0], this->topInputs[0], frames);
         }
-        void AbTopMonoStereo(uint32_t frames)
+        void abTopMonoStereo(uint32_t frames)
         {
             Copy(this->inputs[0], this->topInputs[0], frames);
             Copy(this->inputs[0], this->topInputs[1], frames);
         }
-        void AbTopStereoStereo(uint32_t frames)
+        void abTopStereoStereo(uint32_t frames)
         {
             Copy(this->inputs[0], this->topInputs[0], frames);
             Copy(this->inputs[1], this->topInputs[1], frames);
         }
 
-        void AbBottomMonoMono(uint32_t frames)
+        void abBottomMonoMono(uint32_t frames)
         {
             Copy(this->inputs[0], this->bottomInputs[0], frames);
         }
-        void AbBottomMonoStereo(uint32_t frames)
+        void abBottomMonoStereo(uint32_t frames)
         {
             Copy(this->inputs[0], this->bottomInputs[0], frames);
             Copy(this->inputs[0], this->bottomInputs[1], frames);
         }
-        void AbBottomStereoStereo(uint32_t frames)
+        void abBottomStereoStereo(uint32_t frames)
         {
             Copy(this->inputs[0], this->bottomInputs[0], frames);
             Copy(this->inputs[1], this->bottomInputs[1], frames);
         }
-        void LrTopMonoMono(uint32_t frames)
+        void lrTopMonoMono(uint32_t frames)
         {
             Copy(this->inputs[0], this->topInputs[0], frames);
         }
-        void LrTopMonoStereo(uint32_t frames)
+        void lrTopMonoStereo(uint32_t frames)
         {
             Copy(this->inputs[0], this->topInputs[0], frames);
             Copy(this->inputs[0], this->topInputs[1], frames);
         }
-        void LrTopStereoStereo(uint32_t frames)
+        void lrTopStereoStereo(uint32_t frames)
         {
             Copy(this->inputs[0], this->topInputs[0], frames);
             Copy(this->inputs[0], this->topInputs[1], frames);
         }
 
-        void LrBottomMonoMono(uint32_t frames)
+        void lrBottomMonoMono(uint32_t frames)
         {
             Copy(this->inputs[0], this->bottomInputs[0], frames);
         }
-        void LrBottomMonoStereo(uint32_t frames)
+        void lrBottomMonoStereo(uint32_t frames)
         {
             Copy(this->inputs[0], this->bottomInputs[0], frames);
             Copy(this->inputs[0], this->bottomInputs[1], frames);
         }
-        void LrBottomStereoStereo(uint32_t frames)
+        void lrBottomStereoStereo(uint32_t frames)
         {
             Copy(this->inputs[1], this->bottomInputs[0], frames);
             Copy(this->inputs[1], this->bottomInputs[1], frames);
         }
 
-        void UpdateMixFunction()
+        void updateMixFunction()
         {
             if (activated)
             {
@@ -187,37 +187,37 @@ namespace pipedal
                     if (this->inputs.size() == 1)
                     {
                         if (this->topInputs.size() == 1)
-                            this->preAbTop = &SplitEffect::AbTopMonoMono;
+                            this->preAbTop = &SplitEffect::abTopMonoMono;
                         else
                         {
-                            this->preAbTop = &SplitEffect::AbTopMonoStereo;
+                            this->preAbTop = &SplitEffect::abTopMonoStereo;
                         }
                         if (this->bottomInputs.size() == 1)
                         {
-                            this->preAbBottom = &SplitEffect::AbBottomMonoMono;
+                            this->preAbBottom = &SplitEffect::abBottomMonoMono;
                         }
                         else
                         {
-                            this->preAbBottom = &SplitEffect::AbBottomMonoStereo;
+                            this->preAbBottom = &SplitEffect::abBottomMonoStereo;
                         }
                     }
                     else
                     {
                         if (this->topInputs.size() == 1)
                         {
-                            this->preAbTop == &SplitEffect::AbTopMonoMono;
+                            this->preAbTop == &SplitEffect::abTopMonoMono;
                         }
                         else
                         {
-                            this->preAbTop = &SplitEffect::AbTopStereoStereo;
+                            this->preAbTop = &SplitEffect::abTopStereoStereo;
                         }
                         if (this->bottomInputs.size() == 1)
                         {
-                            this->preAbBottom == &SplitEffect::AbBottomMonoMono;
+                            this->preAbBottom == &SplitEffect::abBottomMonoMono;
                         }
                         else
                         {
-                            this->preAbBottom = &SplitEffect::AbBottomStereoStereo;
+                            this->preAbBottom = &SplitEffect::abBottomStereoStereo;
                         }
                     }
                 }
@@ -226,37 +226,37 @@ namespace pipedal
                     if (this->inputs.size() == 1)
                     {
                         if (this->topInputs.size() == 1)
-                            this->preAbTop = &SplitEffect::LrTopMonoMono;
+                            this->preAbTop = &SplitEffect::lrTopMonoMono;
                         else
                         {
-                            this->preAbTop = &SplitEffect::LrTopMonoStereo;
+                            this->preAbTop = &SplitEffect::lrTopMonoStereo;
                         }
                         if (this->bottomInputs.size() == 1)
                         {
-                            this->preAbBottom = &SplitEffect::LrBottomMonoMono;
+                            this->preAbBottom = &SplitEffect::lrBottomMonoMono;
                         }
                         else
                         {
-                            this->preAbBottom = &SplitEffect::LrBottomMonoStereo;
+                            this->preAbBottom = &SplitEffect::lrBottomMonoStereo;
                         }
                     }
                     else
                     {
                         if (this->topInputs.size() == 1)
                         {
-                            this->preAbTop == &SplitEffect::LrTopMonoMono;
+                            this->preAbTop == &SplitEffect::lrTopMonoMono;
                         }
                         else
                         {
-                            this->preAbTop = &SplitEffect::LrTopStereoStereo;
+                            this->preAbTop = &SplitEffect::lrTopStereoStereo;
                         }
                         if (this->bottomInputs.size() == 1)
                         {
-                            this->preAbBottom == &SplitEffect::LrBottomMonoMono;
+                            this->preAbBottom == &SplitEffect::lrBottomMonoMono;
                         }
                         else
                         {
-                            this->preAbBottom = &SplitEffect::LrBottomStereoStereo;
+                            this->preAbBottom = &SplitEffect::lrBottomStereoStereo;
                         }
                     }
                 }
@@ -303,7 +303,7 @@ namespace pipedal
         void Activate()
         {
             activated = true;
-            UpdateMixFunction();
+            updateMixFunction();
             snapToMixTarget();
 
             mixBottomInputs.clear();
@@ -471,7 +471,7 @@ namespace pipedal
                 if (splitType != t)
                 {
                     splitType = t;
-                    UpdateMixFunction();
+                    updateMixFunction();
                 }
                 break;
             }
diff --git a/src/SysExec.cpp b/src/SysExec.cpp
index b2e18f2..ba319a3 100644
--- a/src/SysExec.cpp
+++ b/src/SysExec.cpp
@@ -63,7 +63,7 @@ static std::filesystem::path findOnSystemPath(const std::string &command)
     throw PiPedalException(s.str());
 }
 
-void pipedal::SilentSysExec(const char *szCommand)
+int pipedal::silentSysExec(const char *szCommand)
 {
     std::stringstream s;
     s << szCommand << " 2>&1";
@@ -76,10 +76,11 @@ void pipedal::SilentSysExec(const char *szCommand)
         {
             fgets(buffer, sizeof(buffer), output);
         }
-        pclose(output);
+        return pclose(output);
     }
+    return -1;
 }
-int pipedal::SysExec(const char *szCommand)
+int pipedal::sysExec(const char *szCommand)
 {
     char *args = strdup(szCommand);
     int argc;
@@ -135,7 +136,7 @@ int pipedal::SysExec(const char *szCommand)
 }
 
 
-std::string pipedal::GetSelfExePath() 
+std::string pipedal::getSelfExePath() 
 {
     char result[PATH_MAX+1];
     ssize_t count = readlink("/proc/self/exe", result, PATH_MAX);
diff --git a/src/SysExec.hpp b/src/SysExec.hpp
index a80c7a4..7a32a2b 100644
--- a/src/SysExec.hpp
+++ b/src/SysExec.hpp
@@ -22,10 +22,10 @@
 
 namespace pipedal {
 // exec a command, returning the actual exit code (unlike execXX() or system() )
-int SysExec(const char*szCommand);
+int sysExec(const char*szCommand);
 
 // execute a command, suppressing output.
-void SilentSysExec(const char *szCommand);
+int silentSysExec(const char *szCommand);
 
-std::string GetSelfExePath();
+std::string getSelfExePath();
 }
\ No newline at end of file
diff --git a/src/templateJack.service b/src/templateJack.service
index 441ea2f..72f3dcf 100644
--- a/src/templateJack.service
+++ b/src/templateJack.service
@@ -16,7 +16,7 @@ Group=jack
 Restart=always
 RestartSec=15
 
-Environment=JACK_PROMISCUOUS_SERVER=jack
+Environment=JACK_PROMISCUOUS_SERVER=audio
 Environment=JACK_NO_AUDIO_RESERVATION=1