So to answer a few questions. We don't destroy/wipe a PC on logoff. We actually don't run anything at logoff, we only run the activation script at logon. This script has worked fine for all terminals and is pushed via GPO.
Secondly, I compared this terminal with other terminals through GPO to see the difference, there is nothing that stands out. It has all of the same policies our other terminals have.
We don't run the deactivation script, only the activation.
Like you had mentioned though, when I reboot the license.sig is missing, where it was generated before reboot.
We have a GPO to push all desktop icons the computers need, then we run a script to set the xml template. These things have not caused issues with our other terminals, so not sure why I have 3-4 terminals with an exception. I just can't get fences activated on these terminals. Thanks!