Ensure only one instance is running and publish company info.

lib/ConfigLoader.py

@@ -249,8 +249,12 @@ class ConfigLoader(QObject):
         self.__saveConfig()
 
     @Slot(result = dict)
-    def getCompanyInfo():
-        return self.__config['company']
+    def getCompanyInfo(self):
+        try:
+            return self.__config['company']
+        except KeyError as ex:
+            print(f"Missing company info: {ex}")
+            return None
 
     @Slot(dict)
     def saveMiscConf(self, misc_conf = None):
@@ -259,7 +263,11 @@ class ConfigLoader(QObject):
 
     @Slot(result = bool)
     def systray(self):
-        return self.__config['misc']['SYSTRAY']
+        try:
+            return self.__config['misc']['SYSTRAY']
+        except KeyError as ex:
+            print(f"Missing configuration: {ex}")
+            return False
 
 
     @Slot(str, str)