Hi, same problem...!
Does anyone have a solution?
The snapvol.cfg is excluding it in appvolume templates. you either need to edit that file, or easier is just do the installs and then go to the folder C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys and grab the files that are created after the installs and copy them out. Then use something like uem to copy them back on logon. As long as your build machine is a direct clone of your paren image, this should work, and I'm doing this now for a similar problem.