I'm facing some problems with my vbulletin.
On my forum my users can't post any attachments because when they click 'manage attachements' a blank page just appears.
Recently I installed the mod_pagespeed in my server and this happened since there. I tried to disable mod_pagespeed and the issue disappears, so is a conflict.
If I disable mod_pagespeed in my vbulletin forum will appear a new issue... When I read new posts doesnt mark as read, always appears as read. Unless I refresh the page. The same when I log in I have to refresh the page to see my self logged in.
I need someone EXPERT in vBulletin to fix this problem for me.