Error message: Can not find script file when trying to capture an image.

I have MDT running fine but on one laptop when I attempt to capture the laptop image and I map a drive to DeploymentShare$ and run LiteTouch.vbs from teh Scripts folder I get a window with a title of 

Windows Script Host

and the message 

Can not find script file "Z:\Scripts\LiteTouch.wsf"

I can't find a log file with an error message in it. Are there some folders, files or registry entries that should or should not be on the laptop before I capture the image?

I can capture an image from another PC and I can also deploy images.

Thanks in advance for any replies.