For previous users of version 3 of MOP: if you view a "Module Title Goes Here" message and an apparent freezing of the program, then your browser is loading a version 3 file into this page from your computer's cache. The new version is not being drawn in from our server. The fix involves "emptying the cache" and re-loading the page.

For Safari(and other 64-bit browser) users on Mac OS X 10.6, you will have to run your browser in 32-bit mode to use the Minds on Physics modules. Please reference Adobe's official site @ http://kb2.adobe.com/cps/512/cpsid_51273.html for the solution.