Ok, I've read a lot of the help topics so far but nothing seems to help.
To sum it up, I have extracted the ISO with Exiso and put the game on my USB.
I then launch the default.xex with Xexmenu, I get to the main menu fine but everything goes wrong when I try to start playing.
If I start campaign, I get a black screen, if I try to play multiplayer, I either get sent to the dashboard with a message saying "Fatal Crash intercepted" or it just freezes and if I try to start a game of zombies the Jtag freezes.
I also had the "Fatal crash" message happen when I changed the difficulty on zombies on my second attempt. If anyone can help it would be great, I really want to play