UBB.threads PHP Forum Software Community Forums UBB.threads 7 Version 7 Support Upgrading from ubbthreads 7.3 to 7.5

Actually, I seem to have one problem.

My main "admin" account - seems to be able to login, but when I click on any forums it "logs me out".... ie goes back to the page as if I am not logged in. And I can't get into control panel.

Luckily other admins seem to be ok and can get into CP.

Any idea what is going on there?

Thanks