Its seem that once I turn on the SEF the urls change but the pages aren't displayed it says that url not found. I get a page error..I think its 404 error. If that makes since.

Hello,

I have purchased Joomsef for my site and nothing is working. When I turn SEF on for my site all the urls break. I can't access my articles page, the kunena forum, HWDvideoshare, hwdphotoshare. When my users log into my site they are redirected to the preferences page of their profile instead of there home profile and the easyblog component that I have installed doesn't work. Assistance would be greatly appreciated :) This seems like such a great component and I would love to use once its working properly.