--- a/management/univention-management-console/src/univention/management/console/protocol/modserver.py	
+++ a/management/univention-management-console/src/univention/management/console/protocol/modserver.py	
@@ -290,8 +290,8 @@ def handle(self, msg):
 				try:
 					self.__handler.init()
 				except BaseException:
+					self.error_handling(msg, 'init', *sys.exc_info())
 					self.__handler = None
-					raise
 
 			self.response(resp)
 			return