Hi All, The attached .py file demonstrates a problem I'm having with a little scheduler I need to maintain. The loop() function is supposed to be a "catch all and report" error handler. However, when the async code initiated by doStuff throws the AttributeError, what actually gets logged is: 2010-09-28 14:41:15,706 ERROR : log (14757|7f691ba676e0): Unhandled Error Traceback (most recent call last): File "test_looping.py", line 41, in <module> reactor.run() File "Twisted-8.2.0-py2.5-linux-x86_64.egg/twisted/internet/base.py", line 1128, in run self.mainLoop() File "Twisted-8.2.0-py2.5-linux-x86_64.egg/twisted/internet/base.py", line 1137, in mainLoop self.runUntilCurrent() --- <exception caught here> --- File "Twisted-8.2.0-py2.5-linux-x86_64.egg/twisted/internet/base.py", line 757, in runUntilCurrent call.func(*call.args, **call.kw) File "test_looping.py", line 24, in __call__ del self.connector exceptions.AttributeError: Break instance has no attribute 'connector' 2010-09-28 14:41:15,707 ERROR : log (14757|7f691ba676e0): Unhandled scheduled exception Traceback (most recent call last): File "test_looping.py", line 41, in <module> reactor.run() File "Twisted-8.2.0-py2.5-linux-x86_64.egg/twisted/internet/base.py", line 1128, in run self.mainLoop() File "Twisted-8.2.0-py2.5-linux-x86_64.egg/twisted/internet/base.py", line 1137, in mainLoop self.runUntilCurrent() --- <exception caught here> --- File "test_looping.py", line 35, in loop yield doStuff() exceptions.GeneratorExit: But, more crucially, the looping call then appears to stop. What can I do to get the exception logged and then everything handled sanely such that the looping call can continue and my lopp function will keep getting called once every second rather than stopping? cheers, Chris