Cortana cutscene glitch/Cross-Game problem

Hi

I have been playing the Cross-Game playlist and I finished playing through the last mission of Halo 2.

The thing is when the final cutscene with Cortana and the Gravemind is about to play the game starts acting kinda weird. First of all if I use the new graphics the screen just goes black. If I switch back to the old graphics the only thing I can see is Cortanas scary glitchy face.

When I backed out it says I’m on Halo 3s last mission so I click to resume playlist but the mission wont start up and it takes me back to the mission screen.

Do I need to start all over again?

Here’s a video clip I uploaded from the Xbox: https://www.youtube.com/watch?v=x1GOMLvcc2Y

bump

Bumping threads is against the forum rules.

Well instead of making a new thread I bumped my old one. Makes sense doesn’t it.

If you can help me please do.