I am having the same problem. I purchased via Digital Juice and downloaded via the link sent. (v 4.3.1 for windows)
Installed ProAnimator standalone per instructions.
Run the program.
Selected Create 3d Text, typed in text, selected OK
Drag an object style onto text…this took about 30secs to do.
Clicked on “Try”…
One frame eventually rendered, after 20 seconds or so…
Then entire program just stops.
Computer is 2GMem, Dual Core. Runs my other apps (Vegas, etc.) without problem.