PokerTracker errors importing HH's : do to many HH's crash Software??

[ace93rd]

Is there a limit to the amount of HH's u can try to importa at one time into pokertracker, I am trying to import 70k HH's (30days worth of data) and the software keeps on freezing up no matter how long i leave it for...i tryed to do this overnight and it was still frozen in morning. Is this typical, if not I can explain exactly what i am doing and perhaps the problem lies somewhere else.
Thanks.