UTMS Windows Agent Install Error

[dang4210]

OK, I'm about ready to pull what's left of hair out. When I try to use the powershell install script to install a Windows agent, I get permission denied.
Start-Process : This command cannot be run due to the error: Access is denied.
At line:2 char:1

• Start-Process "C:\Program Files\UTMStack\UTMStack Agent\utmstack_agen ...

•   + CategoryInfo          : InvalidOperation: (:) [Start-Process], InvalidOperationException
    + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand
    
  

I've changed permissions on the folder to allow "everyone" access (just one machine I'm working on right now) Same issue, I'm running the script locally on the machine, as an administrator (I've also tried running it as a domain admin, same issue)

Has anyone seen this before, my googlefu has failed me on this. All ports are open (I can telnet in all needed ports with no issue from the workstation), it doesn't appear to be an actual permissions issue, unless I'm completely missing something.

Appreciate any help/guidance anyone can give.