make sure you are numbering your animations correctly, sounds stupid but for aniutil it has to be done, 01 to 09 then from 10 onwards. if you dont put a 'zero' in front for the single digets it acts weird. also animations in cursor fx have a limit of 120 frames, anymore than this and it wont work and could shut down too.
cant think of any other reasons why it would shut down....other than those two, hope this helps.
