Can no longer change between styles

[محروم.كوم]

having a problem with our vBulletin.

we had 3 styles, now only the default style works. It'll say it has switched, but it always sticks with the default style.

we had the default vBulletin Style
a Black style
and then a copy of the white style we were in the process of customizing

When I first noticed it, I tried to revert all the templates and that didn't work at all.

http://www.tnmustangclub.org

we've tried disabling all the mods and plugins and nothing works.

any ideas on how to get this fixed? __DEFINE_LIKE_SHARE__