As far as I can say, the crashing only occurs when trying to export the frames of Enemy1. I had no problems exporting TalkPers1, key, Key2 or Pillar.
Interesting that Enemy1 is the only object of the 5 that has its default animation renamed to "Walking", while in Start Animation it still says "Default". However, just setting Start Animation to "Walking" didn't solve the problem, but it may have something to do with it.
Sorry for not being able to help more.