Looks like you had 2 issues. One was that Ghost crashed, and the other was the reboot. It shouldn't have rebooted. If you sent a job to it with an image and a boot to production, then this would be explained by a little check-box in the job that says "continue if any job fails". If you select that, then when the ghost task fails, the next task fires anyway. We don't recommend that with Deployment jobs as a general rule.
But the real issue here is that Ghost crashed. If this is a UEFI system, we may not be seeing the drive correctly. We have some known issues with newer systems that we're working on getting updated. My initial "guess" is that you ran into one of those. I'd recommend a call to support if you can duplicate this, to see if that drive/BIOS is one of those. UEFI for instance is not fully supported at this time, though it sometimes works.