I'm working on a non wikipedia mediawiki -- lotrowiki.com.

Attempting to use the browser function on replace (b) yields a 404 because it is looking for "lotro-wiki.com/wiki/<PAGENAME>

Not being a Python programmer, so far I have not been able to figure out where this "prefix" is coming from.
It is correctly finding the hostname and the pagename... but it is inserting "wiki/" in front of the pagename.

Can someone tell me what module is doing this?

It's nicepath() in family.py. In the family file, add:

    def nicepath(self, code):
        return '/'

And to avoid having you back here for a very similar problem tomorrow, also add:

    def scriptparth(self, code):
        return ''