Tlotz, I have a similar problem with my PX-716SA w/ 1.05 firmware and my ASUS P5AD2-E Premium motherboard (Intel 925XE/ICH6R chipset). I have a BenQ DW1620 and LiteOn SOHW-1633S connected to the ICH6R IDE ports as master and slave respectively, a pair of Seagate SATA HDs connected to two of the ICH6R SATA ports in RAID 1 mirror configuration, and the PX-716SA connected to a third ICH6R SATA port. I am running Windows XP Media Center Edition 2005, with Plextools Professional XL 3.00 and Kprobe2 2.4.2 installed. The Intel Matrix Storage Technology S/W (new name for Intel Application Accelerator) 4.5 appear to recognize the PX-716SA as an optical drive, at least within the Matrix Storage Manager application.
When I launch Kprobe2, the app windows does not appear, though I can see the thread within the task manager processes list. I am not getting any STOP 0x00008086 blue screens, but Kprobe2 is completely unusable.
I haven't tried experimenting with different H/W or S/W configurations, but here's a link to download the latest available Intel Matrix Storage Technology S/W supporting ICH6R RAID:
If I find out more about this issue I'll post again.