Ok I was now wondering as I use the Obj morphs target allot ... have not for a while but it is sure useful So I made some tests like mentioned with and without "Attempt vertex Order Correction" then also ran a test with a wrong Obj to get the error message that the " Target geometry has wrong number of vertices " now either way I could not simulate or cause a crash I just would get an error message. using the "Attempt vertex Order Correction" worked without any issues

I am still running on Poser 11.1 and in my case impossible to make it crash .... just getting a error message if I mess up