@plyons7890 The error message about an unclean file system is typically related to the source computer not being powered off correctly and files are still marked open.
If the source computer is a ms windows computer I can understand this error. You must not use the standard “shutdown” command because it is not really a shutdown/power off command but more of an advanced sleep command, leaving files open.
You can/should do the following
Let sysprep power off the computer before cloning with FOG. Turn off fast startup in windows, this will switch shutdown into its traditional shutdown mode. Use the windows shutdown command shutdown -s -t 0 command to power off the computer before cloning.