Rhiaanon44--"The license is enterprise for multiple machines"
The license activation is not being carried over in the image. So you have to REactivate when asked. It seems that is working OK, so activation is not the problem.
This may help for multiple PC's
http://technet.microsoft.com/en-us/library/ff603508.aspxhttp://kb.iu.edu/data/auwi.html#kms Perhaps someone will write you code to reactivate all PC's at once assuming they are on a network.