get the service file handling right

openlp/core/app.py

@@ -383,10 +383,8 @@ def main(args=None):
     # Check if an instance of OpenLP is already running. Quit if there is a running instance and the user only wants one
     server = Server()
     if server.is_another_instance_running():
-        if server.is_already_running():
-            server.post_to_server(qt_args)
-            server.close_server()
-            sys.exit()
+        server.post_to_server(qt_args)
+        sys.exit()
     else:
         server.start_server()
         application.server = server

openlp/core/server.py

@@ -24,6 +24,7 @@
 from PyQt5 import QtCore
 from PyQt5 import QtNetwork
 
+from openlp.core.common.registry import Registry
 from openlp.core.common.mixins import LogMixin
 
 
@@ -86,16 +87,16 @@ class Server(QtCore.QObject, LogMixin):
         Read a record passed to the server and load a service
         :return:
         """
-        while True:
-            msg = self._inStream.readLine()
-            if msg:
-                self.log_debug("socket msg = " + msg)
-                Registry().get('service_manager').on_load_service_clicked(msg)
+        msg = self._inStream.readLine()
+        if msg:
+            self.log_debug("socket msg = " + msg)
+            Registry().get('service_manager').on_load_service_clicked(msg)
 
     def close_server(self):
         """
-        Shutdown to local socket server
+        Shutdown to local socket server and make sure the server is removed.
         :return:
         """
         if self._server:
-            self._server.close()
+            self._server.close()
+        QtNetwork.QLocalServer.removeServer(self._id)