Disk Utility RAID plugin failure on a computer with no RAID

The Check Apple Disk Utility RAID plugin can sometimes fail to run when Disk Utility fails to send the status of the mounted drives.
Possible causes:
- Failing hard drives
- Disks which are too slow to respond.
Possible resolutions:
- Restarting the computer
- Re-mounting any external drives.
- Replace any questionable drives
Watchman Monitoring will continue to look for ways to improve the client, cutting down on ambiguous errors such as this one.