Missing Caption Styles?
We have added some new caption styles in Adobe Captivate 3 and moved some of the older styles into another folder called More. If for some reason, the caption styles don't show up for selection in the caption style drop down box, you might have to change the .fcm to .FCM in this folder C:\Program Files\Adobe\Adobe Captivate 3\Gallery\Captions\More.
Thanks to Rick Stone for the tip :)