I recently moved my wiki from a LAMP setup to a WAMP setup. There have been a few small issues to resolve, one of them being that user's real names weren't displaying. I noticed that this is because this extension searches for the text "User:" and "User Talk:" in the content then replaces it.
However on Windows, the colon is URL Encoded so no match was made and no substitution performed.
To fix this, I changed
Realnames.body.php around line 212 and replaced the colon with %3A:
// always catch this one # $namespaces = array('User:', 'User talk:'); $namespaces = array('User%3A', 'User talk%3A');
Hope this helps someone in future :)