Error when editing content block 5.6.0.2

Permalink
When I attempt to edit any content block and save it, I am getting a blank error. I can remove, copy and paste the block from scrapbook and add a new block as long as it's only a word or 2. This seems to be on all pages but I've only done extensive testing on the 1. I did try to edit a content block on the home page and got the error there as well. I can add a new block and that seems to work unless I paste or even type by hand the content I'm trying to add which is just a list of dates. If I just add one word, it will allow me to add a new block but more than that causes the error again. Eventually, the site stops responding entirely. Could this be an issue with the web host? I think this site was built on 5.6.0.1 and upgraded to .2 I have tried clearing cache, checked permissions, etc. The site is set up very simply with only the admin account and no complicated permissions. I just rebuilt this site not long ago so any help would be appreciated. I have a backup of the site I made right after I built it, so if nothing else works, I'l just nuke the site and restore from that.

gtruchel