Cannot login

[kalaz@…]

hi, i can't login to my trac because of the following error. I am using IIS to deploy trac.

Traceback (most recent call last):

File "C:\Python25\Lib\site-packages\trac\web\api.py", line 339, in send_error

'text/html')

File "C:\Python25\Lib\site-packages\trac\web\chrome.py", line 708, in render_template

if not req.session or not int(req.session.get('accesskeys', 0)):

File "C:\Python25\Lib\site-packages\trac\web\api.py", line 168, in getattr

value = self.callbacks[name](self)

File "C:\Python25\Lib\site-packages\trac\web\main.py", line 257, in _get_session

return Session(self.env, req)

File "C:\Python25\Lib\site-packages\trac\web\session.py", line 141, in init

self.promote_session(sid)

File "C:\Python25\Lib\site-packages\trac\web\session.py", line 219, in promote_session

(self.req.authname, sid))

File "C:\Python25\Lib\site-packages\trac\db\util.py", line 50, in execute

return self.cursor.execute(sql_escape_percent(sql), args)

File "C:\Python25\Lib\site-packages\trac\db\sqlite_backend.py", line 58, in execute

args or [])

File "C:\Python25\Lib\site-packages\trac\db\sqlite_backend.py", line 50, in _rollback_on_error

return function(self, *args, kwargs)

IntegrityError: columns sid, authenticated, name are not unique