Unsupported version control system "svn"

[Hoctopusse]

Traceback (most recent call last):
  File "C:\Python24\Lib\site-packages\trac\web\main.py", line 387, in dispatch_request
    dispatcher.dispatch(req)
  File "C:\Python24\Lib\site-packages\trac\web\main.py", line 191, in dispatch
    chosen_handler = self._pre_process_request(req, chosen_handler)
  File "C:\Python24\Lib\site-packages\trac\web\main.py", line 263, in _pre_process_request
    chosen_handler = f.pre_process_request(req, chosen_handler)
  File "C:\Python24\Lib\site-packages\trac\versioncontrol\api.py", line 73, in pre_process_request
    self.get_repository(req.authname) # triggers a sync if applicable
  File "C:\Python24\Lib\site-packages\trac\versioncontrol\api.py", line 91, in get_repository
    raise TracError('Unsupported version control system "%s"'
TracError: Unsupported version control system "svn"

windows XP with svn-1.4.3, Python2.4 and svn-python-1.4.3. The svn work perfect, the database is uptadate, but I have this error message

[Emmanuel Blot]

This is an installation issue (and a duplicate of many other tickets).

Please ask for support on the MailingList, and search the MailingList archive for troubleshooting hints with this common issue.