id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 17581 Development server errors pbzrpa@… nobody "Hi, I am running django 1.3.0 final, python 2.6.5, ubuntu 10.04 server, mysql 5.1.41. Note that I have this issue when running the development server ( python manage.py runserver). I have had this issue on other servers too. Every few times when saving files and the server starts to revalidate models it throws out the following exception. It does not stop the server from running but does cause the first page request to fail. {{{ Development server is running at http://x.x.x.x:9206/ Quit the server with CONTROL-C. Unhandled exception in thread started by > Error in sys.excepthook: Traceback (most recent call last): File ""/usr/lib/python2.6/dist-packages/apport_python_hook.py"", line 48, in apport_excepthook if not enabled(): TypeError: 'NoneType' object is not callable Original exception was: Traceback (most recent call last): File ""/usr/local/lib/python2.6/dist-packages/django/core/management/commands/runserver.py"", line 107, in inner_run run(self.addr, int(self.port), handler, ipv6=self.use_ipv6) File ""/usr/local/lib/python2.6/dist-packages/django/core/servers/basehttp.py"", line 696, in run httpd.serve_forever() File ""/usr/lib/python2.6/SocketServer.py"", line 224, in serve_forever r, w, e = select.select([self], [], [], poll_interval) AttributeError: 'NoneType' object has no attribute 'select' Validating models... 0 errors found Django version 1.3, using settings 'x' Development server is running at http://x.x.x.x:9206/ Quit the server with CONTROL-C. }}} I am not sure if my application has simply become too big for django and it does not manage to revalidate all the stuff before trying to serve the request." Bug closed Core (Management commands) 1.3 Normal fixed Accepted 0 0 0 0 0 0