Photos don't open in Photoshop (from Lightroom)

I updated PS, LR and Camera Raw. Now my photos won't open in PS when I do Cmd+E from LR, all I get is a grey screen with the bottom corner of my photo only visible at the top of the page. I have installed a previous version of camera raw as suggested in one of the blogs but no luck. This is very frustrating I need to work on photos for my clients and can't do anything about this. Need help ASAP please!!