[phillipgessert]

My best guess is that you've got one too many closing tags in there. If so, it's not necessarily a closing </navmap>, but it could be. Could also be practically any other tag, with the warning referring to a mismatch.

Otherwise it could be that you've got two opening <navmap>s, but that seems harder to do unintentionally.

There are probably more elegant ways to do this, and I did not think about it long enough to be sure it would even work (giving myself an out here!) but you might try searching for ">" within the file, and also "</". If the former doesn't return double the results of the latter, it might set you down the right path.