Upgrade problems for 2.6.2

I have had WP installed for a long time, just went to do my 2.6.2 upgrade and now when I try to go to pages off the main page (IE example.com) I juse get a blank page.

https://mattherzberger.com/ works just fine then I try to go to bio page, via link at top https://mattherzberger.com/bio and I get a blank white page. Same thing when I try to login to backend blank white screen.

Not sure what the problem is, any ideas?