Admin editing pages gone after upgrade

[jasnick]

Upgrade from 1.10 to 1.11.4

This is the first upgrade that has caused issues and I have done over 20 so far. It went without a hitch and I have upgraded all the modules. The site is fine online. Can get into Admin, the stylesheets and templates are there but when I click on a page to edit it, a blank white page opens.

Can anyone point me in the direction of where to look for the problem?
I feel it must be something fairly simple that I have overlooked.

Thanks

[Dr.CSS]

Your templates may still have {stylesheet} in them, change it to {cms_stylesheet}...

[jasnick]

On the money as usual, Dr.CSS - I fixed that and now some of the background images have gone! Not a problem I hope- I know I do backgrounds differently these days so I can fix that.

Will post back if I have any more issues and if not, then I'll mark this Solved.

Thank you so much once again!