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Index: deluge/core/signalmanager.py===================================================================--- deluge/core/signalmanager.py        (revision 2755)+++ deluge/core/signalmanager.py        (working copy)@@ -66,6 +66,8 @@             gobject.idle_add(self._emit, uri, signal, 1, *data)     def _emit(self, uri, signal, count, *data):+        if uri not in self.clients:+            return         client = self.clients[uri]         try:             client.emit_signal(signal, *data)