upgraded 2612 to 4.000, freezes up

[hogwild]

I upgraded the microstudion from 2612 to 4000 and my computer freezes up when I try to import tracks with cd+g.
I have windows xp with 1.8 processor.
My cd player is Plex Writer 16/10/40A, most tracks would import with the 2612 and the 4000 is advertises to be better. NOT FOR ME IT FREEZES UP and I can't get out of it even by the ctrl alt del method. I have to pull the plug to get out.
I am back to the 2612 and it works ok, I paid for the upgrade and would like the new features.
What should I do?