CosmosWorks admin image apply service pack

We've been using Solidworks 2006 and have updated to SP5.1. Idothe admin installations from my PC, which doesn't even haveandSolidworks software installed.
Recently, our users have wanted to make use of a CosmosWorksandCosmosMotion license we have, so I've been looking at creatinganadmin image for each of these.

I've created the image to two separate locations usingmsiexec /a,with no problems. I'm trying to apply SP5.1 to theadmininstallations, and it's a no-go. I get the long command strungoutthere to do it and get a dialog that says:

"1: The InstallScript engine is missing from this machine.Ifavailable, please run ISScript.msi, or contact yoursupportpersonnel for further assistance."

I already installed the ISScript8.msi that was on the CD.with noluck. I tried using a very stripped down machine, withalmost nosoftware installed, and still got that error.

Any suggestions?SolidworksSimulation