Hum...I now have a disc copy of KUF crusaders. The thing is that it works on a non modded console. It has the same message I posted before about online features being disabled but then proceeds to boot the game. From the disc.
On a modded console it displays the message and then never boots the game. I am sure this is the case with other xbox original games that also disable live features. The modded console must have some sort of disk check feature removed, and thus the disk is never booted after this 'online features' message.
I am most definitely using the most recent files.
that's odd, I don't have that game so I can't check. Can you try with the hacked 2011 version of the emulator to see if the issue occurs?
If it works, try using the xbox.xex from the 2011 emulator and the xefu from the 2018 one (to see if the issue is front end related).