Inadequate O/S Priveleges
“Inadequate O/S Priveleges” error means you have not enough rights to run the game. When you get kicked because of “Inadequate O/S Priveleges”, you need to run ET as an administrator (Windows systems of course…).
Do the following:
a, Right click on your “ET.exe” icon on your desktop and select “Run as Administrator”
b, Right click on your “ET.exe” icon on your desktop and click on Properties -> Compatibility tab -> check the “Run this program as an administrator”