Hi @charlescmyers,
Differences in the configuration file wouldn’t explain that message.
It still sounds to me like two different classes are declaring the ThemePlugin class. On my Linux box, I can search for this by running…
fgrep -l "class ThemePlugin" `find . -name \*.inc.php` | less
If you have SSH access, I’d suggest trying that.
Regards,
Alec Smecher
Public Knowledge Project Team