Theme Switcher do not work

Seems from reading some of the posts that many are not able to get Theme Switcher to work? I am having similar issues. Just downloaded and installed a fresh copy.

1. Using Dropdown option I selected the different themes there but nothing happens
2. Switched to List option and only about two of them actually worked. Problem is, I am not interested in list option anyway. Just curious to see what would happen.

How do I get it to work with dropdown?

Under Appearance/Themes everything looks normal. I don't see any warnings, errors, etc.
The Theme that I am using with this plugin is Golf by Logical Binary. Not sure if that makes a difference but it sure looks like a normal dropdown Theme Switcher menu to me. Also the plugin is only running on a test blog but not Network Activated.

My setup is Blogs-Mu/WordpressMu/BuddyPress All latest versions.