--- a/Debugger/DebuggerInterfacePython3.py	Sun Sep 11 13:11:58 2016 +0200
+++ b/Debugger/DebuggerInterfacePython3.py	Sun Sep 11 16:39:30 2016 +0200
@@ -851,7 +851,7 @@
         
         try:
             commandDict = json.loads(jsonStr.strip())
-        except json.JSONDecodeError as err:
+        except (TypeError, ValueError) as err:
             E5MessageBox.critical(
                 None,
                 self.tr("Debug Protocol Error"),