How to update to 2.0 safely
A Blank page is the white page of Death. A Fatal Error.
Enable Wordpress debug to a log to view the complete error.
Also why don't you use some really good and established seo plugin, like Seo Framework?
I will check out Seo Framework? I was using Yoast before and felt it was too heavy so had moved to minimal SEO plug, but I can read up on Seo Framework as not familiar with that one.
Good advice. Thank you. On the Slim SEO problem maybe I should try to fix that before jumping to go change to another one? I will write to Slim SEO or see if anyone else using wpForo has this same problem.