I can't create new threads?!

[funinthesun]

I have recently installed vbseo and the sitemap generator. I have submitted a ticket on their site but have been waiting for hours and still no reply so thought I would try my luck on here.

For some reason I am unable to create new threads, reply to existing threads or send PM's. I also cannot save any settings in my admincp, templates or otherwise.

None of my members or moderators are experiencing the same problem, only myself. I have checked everything I can think of but to no avail. The only thing I seem to be able to do is edit thread titles. Everytime I try to do anything else, I get redirected back to the homepage.

Any ideas what could be wrong anyone?