Coursepress - Links to pages on my site within lessons don't work

Ive installed coursepress. I also have forums. Within a course unit I created a link to a forum within my site. When clicked it doesn't work. It changes the link I created to look for the forum within the course. I also have a PDF link which does the same thing. External links from within a course work fine. Anything I try to link to that is within my site doesn't work.