Blank Administration page

For some reason the administration area for one of my pages has gone white. I can edit every single post and page on my site except this one. Sometimes, if I use a co-workers computer, I can edit the page but as soon as I save it goes white again. Everything looks fine to the user, meaning that if you browse to my site the page displays normally, even the corrections entered that made the back-end conk out display fine.

I tried disabling my plugins which cleared up the problem. Adding them back one at a time revealed that my search plugin called Relevanssi caused a conflict. Oddly though, after replacing the plugin with a different search plugin the problem to come back. SMH

Once again, this only happens with one page that had been working fine until suddenly it didn’t. The page is unique only in that it has a custom sidebar and page layout from the rest.

Any thoughts?