The only preinstalled security software on this desktop is the Windows Malicous Software Removal Tool and Windows Defender. I don't use Windows Defender and usually once in a while I will scan with the Windows Malicious Software Removal Tool. Seeing that those are built into Windows they shouldn't cause a problem right?
I did try the Full System Scan in normal operation mode and it appears that the scan did start and completed successfully! I'm not too sure if this was my desktop or an internal problem with the Norton 360 virus definitions but I am going to keep an eye on the scans to make sure there are no more errors.