--- a/UI/UserInterface.py	Wed Feb 13 20:39:03 2019 +0100
+++ b/UI/UserInterface.py	Wed Feb 13 20:39:58 2019 +0100
@@ -6649,6 +6649,9 @@
             self.SAServer.shutdown()
             self.SAServer = None
         
+        # set proxy factory to None to avoid crashes
+        QNetworkProxyFactory.setApplicationProxyFactory(None)
+        
         Preferences.setGeometry("MainMaximized", self.isMaximized())
         if not self.isMaximized():
             Preferences.setGeometry("MainGeometry", self.saveGeometry())