Hi! This blank page screen to death in edit posts in wordpress just happened to me and sent me a hell of a panic.
1. Some thread suggests installing google libraries plug-in. so I tried as well but didn’t help me at all.
2. I tried deactivating all my plugins
3. Revert my theme to the default theme.
None of this solved the problem.
But after hours of figuring it out, I was able to fix it. It turned out that the .htaccess rule was the source of the problem. To check this, I access my server thru ftp and rename the .htacess file. I clear cached and refresh the page and it works just fine for me now.
If this step did not solve the problem then it could be that your wordpress upgrade was not not performed properly and your files may be corrupted.
I hope this could help you guys! =)