Problem
 

I have uninstalled it, lots of bugs. One stupid one though:

Why do u make the showthread to be a folder/filename.html rewrite?
It should be just a filename.html because when you want to go back to the index.php, it'll go to an invalid page because it's in a folder which doesn't even exist, you know what I mean?

That's the only main issue right now, fix it please.

It helps SEO tremendously to have the forum name. If you applied all of the template changes from install.html, images and all links will return back to the forum index and the correct place.