"TypeError: iteration over non-sequence" if you empty the permission list

[bugs@…]

I created a new trac project and purged the permission list so no user was left in the list.

If you open the created project in your browser, then the following error is shown:

Oops...

Trac detected an internal error:

iteration over non-sequence
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/trac/web/modpython_frontend.py", line 206, in handler
    dispatch_request(mpr.path_info, mpr, env)
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 139, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 80, in dispatch
    req.perm = PermissionCache(self.env, req.authname)
  File "/usr/lib/python2.4/site-packages/trac/perm.py", line 276, in __init__
    self.perms = PermissionSystem(env).get_user_permissions(username)
  File "/usr/lib/python2.4/site-packages/trac/perm.py", line 132, in get_user_permissions
    for perm in self.store.get_user_permissions(username):
  File "/usr/lib/python2.4/site-packages/trac/perm.py", line 218, in get_user_permissions
    for user, action in rows:
TypeError: iteration over non-sequence

I know a project with no permissions set isn't very useful, but nonetheless it's an error.

[rblank]

Did you set the version field correctly? 0.9.3?

I'll check if this is still the case on 0.11-stable.

[bugs@…]

Yes, I use version 0.9.3, because it's the stable version in Ubuntu Dapper LTS Server Edition...
I don't know if it's the case on 0.11.

[osimons]

Duplicate of #2862.

BTW, 0.9.x versions are no longer supported. We won't be handling new issues from such old versions unless they are clearly reproduceable also with newer and supported versions.