It took a little while but I was able to get Magic SEO URL's working,, but am still having one major issue. When it's active, users can't login. When they try, it brings them right back to the login screen. Sometimes it gives a security error, and sometimes it just says nothing. When I comment out the code in application_top.php to deactivate the module, everything works great (except that my URLs are so long).
I'm running the newest version of ZenCart and Magic SEO URL's w/ PHP 5.2.13. Any ideas? I would set it to just ignore the login pages, but I can't figure out how to make it work.