And not only that, but even appending the objects into a new file will crash the new one as well when starting the game. So it’s easy to isolate the problem to a file that is almost as simple as you can get.
BGECrashblend.blend (745 KB)
Simply put, doing any changes to the action actuator settings used by the object will not help, the fact that some scenes might just quit Blender without warning due to some animated objects is a concern for those making large games as you then get an uncertainty of what scenes will work and what won’t.
The Sunday Meeting talked about a possible ‘a’ release for 2.66 next week and I do hope that this crash can be fixed by then, if this can be fixed by the time people make new builds tomorrow than that would be even better.