I've written a Twisted Windows Service which works perfectly with Twisted 1.3 and Python 2.3. I've used the sandboxed ntsvc from moonfallen's svn. I upgraded everything to Twisted 2.0.1 and Python 2.4.1 (even tried ActiveState's), and followed the information provided in moonfallen's README-service (that is, patch pywin32's boot_service.py). It compiles correctly to a .exe, without any supplementary error and I can install it correctly as a service (using 'xxxxxx.exe -install'). But When I try to launch it (in the GUI Service), it dies immediately, putting the following message in the Windows Event Observer: The instance's SvcRun() method failed File "win32serviceutil.pyc", line 742, in SvcRun File "ntsvc\runner.pyc", line 79, in SvcDoRun File "ntsvc\runner.pyc", line 48, in run File "twisted\application\app.pyc", line 31, in installReactor File "twisted\python\reflect.pyc", line 344, in namedModule exceptions.ImportError: No module named default I even cleaned my code to have just a .tac with 2 lines, and it does the same error. So I'm pretty sure it's not a problem in my code. Has anyone managed to create and run a service with Python 2.4.1 & Twisted 2.0.1? I'm using py2exe 0.5.4 and pywin32 204 both for python 2.4. Thanks, Luc -- Luc Stepniewski <luc.stepniewski@adelux.fr> Adelux - Securite, Linux Public key: <http://lstep.free.fr/pubkey.txt> Key BC0E3C2A fingerprint = A4FA466C68D27E46B427 07D083ED6340BC0E3C2A