[eluser]Swedie[/eluser]
I have combined CI and vBulletin (4).
CI instance is fetched in a plugin that hooks to the global.php file.
CI adds / modifies the header and footer to set the correct layout.
All that works as wanted.

But when posting for example a new thread, CI kills something inside vBulletin.
It works for doing replies via the ajax method (quick reply). But not full page replies.

CI goes in and does something with the variables that are being posted.
Leaving me with a vBulletin message saying I don't have the right to post anything!

It is something with either vB or CI's CSRF protection, I guess.
Or, CI kills global setting variables for vBulletin.

As soon as I disable CI, vBulletin works as it should.

I need to resolve this ASAP as it's an active community with thousands of users... waiting right now to post again!