Blank admin screen after upgrade

I have Trixbox and noticed that it has not offered me the ability to update FreePBX in a while the last one I had was 2.5.4 so I ant to http://www.freepbx.org/support/documentation/installation/upgrading-your-system
and followed the instructions only to end up with no FREEPBX admin all I have is a black page.

I updated because none of my trunks nor extension would register.

Any help would be appreciated.

Thanks