FYI, we are looking into fixing this in a future update. It looks like there is a bug in Captivate 4 that caused this to happen. We look for the rdIsMainMovie variable in the Captivate SWFs that they still have documented here:
Adobe Captivate 4 * Variables
Unforuntately it looks like they accidentally removed that variable, and that is what caused it to break.
Anyway, we will work around the bug in the next update we do.