Hello. Thanks for your reply.
This batch file is very basic and just checks for existing directories / copies /pastes files to some other directories.
it doesn't install anything
This appears to only effect a couple of computers. I have uninstalled and re-installed the clients on the effected computers. tried the /resetguid command.
All the other computers that this was run on worked successfully. This shows that the config of cms is ok and running the batch file is also ok.
I would say that this issue is computer configuration related although i can't confirm.
additionally UAC isn't enabled on the effected pc's.