[Plugin: WordPress SEO by Yoast] Page problem with Yoast

WordPress version: version 3.4.1
WordPress SEO version: Version 1.2.8.3

I did this: Installed Yoast on two sites

I expected the plugin to do this: Work with out a issue
HOSTGATOR Says it is a Yoast plugin problem.
Instead it did this:

Pages can no longer be seen on wen. Posts can be scene fine.

-The only I can see Pages now on one site this permalinks set to default.

Screen shot here Page broken

Screeb Shot two

https://www.ads-software.com/extend/plugins/wordpress-seo/