You need to play the exported file in a media player program which supports AAC audio.
If all else fails, click on the "splash" link on top of this page - the Splash PRO player made by the very same people does an excellent job of exactly that.

If you didn't already see I made 2 posts about the same issue because the first one I posted didn't show up and I did not know it had to be approved so I posted the second one. You can delete the other one if you want c:

Action! records videos in its own format called FIC. This is highly optimized codec for games and desktop recordings.

it implies anything, windows STILL prompts me to refresh Action! Indeed, even after as of now reinstalling it and such, which persuades that it won't not be completely refreshing in any event to the point that windows itself can perceive the refresh.

Please try removing or moving to another location all your video files from your video output folder. Once your video folder is empty please run Action! and see if it's still crashing. awesomethis