HELP PT works fine one day and not the next!

[oddeodude2012]

After last nights session (which had no problems relating with PT), I hooked up a new SCSI drive and began to zero it so it would be nice and fresh. Now there was only 1 other driver attach to this array at the time.( Both drives were in a glyph trip). I came in this morning and start up PT only to have the program crash. The SCSI drive that was working now causes the program to crash stating (in the submit report to apple) something about an invalid kernal address. I then transfer everything to another SCSI drive and it seemed to work. I notice after that the program was very sluggish so i repaired permissions and on the local drive and restarted. Work fine until we tried to record (14 channels at once).Crash. tried opening the program and the computer froze. i had to hard reset it. So i have been fighting with the program all day as it continues to act like this, we made it through but i cant have another day like that. I have never had a problem like this with PT. like i said in the titled worked fined all through the previous nights session then when i came in the morning i had to deal with this. thanks in advance for any help you can offer.

G5 dual 2.0 (2nd gen)
2.5 GB Ram
HD3 w/ 192i
PT 6.4
OS X.3.5