upload_driver_pack.ps1 must be run 
	a) from a PowerShell session with admin privileges and
	b) from its existing location on the psimage share.

Do NOT copy it to the local machine. Connect to the share in the Administrator PowerShell session either
	a) using a UNC path or 
	b) mapping the share to a drive letter
and run the file from its original network location there.

You may have to change the PowerShell execution policy first.