Fatal error: Class 'SkinSkinny' not found in Skin.php on line 6

[BHBarb]

I know you are no longer maintaining this, but I have to install an upgrade to MW 1.30, and I am getting this error message: Fatal error: Class 'SkinSkinny' not found in /home/[serveracct]/public_html/mw3/w/skins/Booty/base/Skin.php on line 6

Can you advise on a fix?