Posts, when clicked lead to 404 Error, Multisite with BB

For a site that I am building I ran into a problem. My posts are showing up on my theme page but when clicked to read more, users are sent to a 404 Error screen. This is only for posts because pages work fine. Also, this has effected every page in my multi site configuration. I do have BB set on a separate domain.

The site is:

Any help is appreciated.

I am running several plugins including Pro Blogs.