Can't edit pages since 1.11.2

[pschoenb]

Hello,

after upgrading to 1.11.2, my site itself works, but I get a blank page when trying to edit the content of a page.

So far, I do not get any errors or warnings. I'll post an update as soon as I'll have more substantial information.

What could be the problem?

[pschoenb]

Found the problem. The module SEOtools is incompatible.