Fix stopping signalreceiver

deluge/ui/signalreceiver.py

@@ -70,8 +70,12 @@ class SignalReceiver(
         """Shutdowns receiver thread"""
         self._shutdown = True
         # De-register with the daemon so it doesn't try to send us more signals
-        client.deregister_client()
-        client.force_call()
+        try:
+            client.deregister_client()
+            client.force_call()
+        except:
+            pass
+        log.debug("Shutting down signalreceiver")
 
         # Hacky.. sends a request to our local receiver to ensure that it
         # shutdowns.. This is because handle_request() is a blocking call.