There is a CS6 Bug with AVCHD http://forums.adobe.com/thread/1004369?tstart=0
-and LOCK the media http://forums.adobe.com/thread/1077245
Not all cameras are affected by the issue. In particular, it seems like several Panasonic AVCHD cameras work just fine, whereas several Sony and Canon models do not.
Not sure why, though.
any thoughts on which sony cameras? looking at the nex 50a
I haven't been keeping track of which models don't work.
I know the Panasonic GH2 works fine. I believe the new GH3 does as well. I think I've also heard of success using the AF100.