Invalid administration session.

[PeterCY]

I'm helping a friend with his forums and he made a usergroup for me with admin cp access so I can assist him.

But there's a problem, when I'm trying to log in to the admin dashboard, it logs me fine, but when I'm trying to edit something for example configuration tab or any tab, it logs me out with this reason: invalid administration session.

I don't know what's wrong, how can I fix this? My friend can log in and edit stuff without getting this error, is it a problem with the usergroup I'm in?

[.m.]

looks like it is a problem with your browser. have you tried using another browser ?

[PeterCY]

looks like it is a problem with your browser. have you tried using another browser ?

Thanks!