UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? Changing forum styles (Window10 IIS10)

Hey guys was chatting with Gizmo on this and he asked to share it on the forums..

I just did a completely fresh installation of 7.7.4 and it was pretty much un-eventful. I have one wierd issue. I go to change the forum style from dark to light in the bottom dropdown and vice versa. It gives a 404 error because it has doubled the entry when referencing it'self.

EG:

goes from http://www.domain.com to http://www.domain.com//www.domain.com/ubbthreads.php?ubb=cfrm when making this change.

I ran the test script it says nothing is broken. It's only that dropdown having the issue. I tried making baseurl the same as fullURL as it is the same.

Any thoughts ? It's the only thing that seems to be off. everything else is awesome. I used to install this in my sleep in the old days this might be something to check.