hey it seems the pro pack is overrated. i get the same thing with Max...... but i found out that, max does not like the path generated by the walk designer. maybe that has something to do with it... but even without the path. whenever the propack does work, i will save it. and the next day boom. crash......... generating errors........ pro-pack is not a good investment....... so if anyone is considering purchasing it.... DONT...... i am going to stick with Conans Maximum pose...... at least that works the way it claims to.......