You need to run Ghostwalker via the Ghost Console, most likely to change the Security Identifier (SID). This may result from not choosing this on a Clone Task, or needing to change the SID for another reason.
The Ghost Console can execute commands in its PreOS environment. This requires that a new Software and File Actions Task be created. These steps will accomplish this. This assumes the use of PC-DOS as the default PreOS in Ghost Solution Suite 2.5: