Can't Update wordpress

Hello,

I have attempted to update the main wordpress install and it doe not error or anything but show a white screen where the install script would normally show. Please note this is not the normal white screen of death where you cant do anything. I can do all sorts of other things like update plugins and take backups I just cant seem to update the main wordpress. I have enabled support on the site clarkemoyer.com so please go in and take a look.

Thank you,