We're using version 10.01.
It's hard for us to upgrade, as we've modified the forum heavily (admitedly a mistake).
It's been running fine, but one bug has been plauging it for a long time now. When you make a post, or a reply sometimes the error is thrown:
Only members with sufficient permission can access this page.
A security error has occurred with with authentication.
Or more commonly:
The "session expired" and "you don't have sufficient permission"
Is there anything I can modify myself to prevent these errors being thrown? I've tried looking at the source but it's fairly complicated and am a little lost.
Thanks if anyone can help, it would mean a lot to our users and me!