Good News and Bad News....original Mbox & Pt Le 6.4

[captain54]

the Good News......found a real sweet deal on an original Mbox...came with PC software..on Ebay
I've got a old ibook G3 700 640mb, OS 10.3.9....wanna use it for mono VO recording...
the other Good News...found another deal on a Mac PT Le 6 install disk....on Ebay

the Bad News.....I installed 6.0 ....crashed my computer upon launch... then installed 6.4
didn't crash the computer, but PT LE crashes upon start up...
it asked me to validate the software once while I was getting it to work, and once I entered the
code, I actually got it to launch one and only one time....
here's the crash report:

Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000cb0

could the problem possibly be that the install disk and the unit itself have two different registration
codes? (seeing that they were purchased from two different sources)....I've entered the registration
from the users guide that came with the disk when I've registered to download the 6.4 update

anyone have any ideas? would be greatly appreciated