I'm not talking about a specific instance, I'm just talking about general random crashing when you know everything is OK but it just screws up anyway.
there are a few reasons, sometimes... Once I "tried against my will" to press the buttons really fast to be out of the stun state (I don't know I have to say it like this but...) and it froze.
The only thing to avoid random freeze is to play with less PSA/Stages hacked but... after this... I don't really know.