diff --git a/deluge/config.py b/deluge/config.py
index ded4b15bd..f63b31c7a 100644
--- a/deluge/config.py
+++ b/deluge/config.py
@@ -72,12 +72,11 @@ import logging
 import shutil
 import os
 
-from twisted.internet.reactor import callLater
-
 import deluge.common
 
 json = deluge.common.json
 log = logging.getLogger(__name__)
+callLater = None # Necessary for the config tests
 
 def prop(func):
     """Function decorator for defining property attributes
@@ -219,6 +218,11 @@ what is currently in the config and it could not convert the value
         log.debug("Setting '%s' to %s of %s", key, value, type(value))
 
         self.__config[key] = value
+
+        global callLater
+        if callLater is None:
+            # Must import here and not at the top or it will throw ReactorAlreadyInstalledError
+            from twisted.internet.reactor import callLater
         # Run the set_function for this key if any
         try:
             for func in self.__set_functions[key]:
diff --git a/deluge/ui/client.py b/deluge/ui/client.py
index 650dcfa45..a2a5136c7 100644
--- a/deluge/ui/client.py
+++ b/deluge/ui/client.py
@@ -152,12 +152,12 @@ class DelugeRPCProtocol(DelugeTransferProtocol):
             # Recreate exception and errback'it
             try:
                 # The exception class is located in deluge.error
-                if hasattr(error, request[2]):
+                try:
                     exception_cls = getattr(error, request[2])
                     exception = exception_cls(*request[3], **request[4])
-                else:
-                    # Shouldn't happen
-                    raise Exception("Received invalid exception: %s", request[2])
+                except TypeError, err:
+                    log.warn("Received invalid RPC_ERROR (Old daemon?): %s", request[2])
+                    return
 
                 # Ideally we would chain the deferreds instead of instance
                 # checking just to log them. But, that would mean that any
@@ -187,7 +187,6 @@ class DelugeRPCProtocol(DelugeTransferProtocol):
                     # what's happening
                     log.debug(msg)
             except:
-                # Failed probably because of invalid data (old daemon)
                 import traceback
                 log.error("Failed to handle RPC_ERROR (Old daemon?): %s\nLocal error: %s", request[2], traceback.format_exc())
             d.errback(exception)