I also think that it's either a memory overflow or an invalid pointer.

My problem is that I've done the following things without success:

- listed all currently running functions (before and after the level_load) and checked them
- removed all actions from the models in the level where the error occurs

But I still believe that it's like you said ... unfortunately it seems not possible to list running functions before their first wait command. So their might run a function that I don't see at the time of the crash.