[muman]

I have tried opening old sessions and starting new ones. The sessions open but after I record something and then hit stop ProTools shuts down. I thought maybe a virus but I am not connected to the net. I've tried resarting and also ran disk utilities but to no avail. Any suggestions.

Mac G3/ 300mhz
ProTools tdm/mix plus
768 mb ram
HUI control via midiman 2X2 usb