I have that same problem with the same game but I'm using HEN.
System: 4.84
HEN: 2.3.1
1 - I tried to run CoD4: MW(ISO format) on Multiman = ISO TYPE: 32 / ERROR: ENCRYPTED/INVALID ISO
2 - I converted from ISO to folder format and tried to play = Error 80010017
3 - I updated the game = The...