The game was running fine till I finished the Root of All Evil mission. Once the Alpha Ceph is released, I see the entire cutscene until Prophet says, he's out in the open. And then it just goes blank. Nothing happens after that. I let it run for an hour and it was still just stuck.

This is the config I have -
AMD Athlon X2 5200+ (I know, the bare min)
4 GB RAM
AMD Radeon 7770 HD 1GB
Windows 7

What is strange is that it runs fine till here. I've tried loading the last saved game, and it takes me to when the lift opens at the top of the tower, so I try again and no luck. I also tried skipping the cutscene, it just goes blank and hangs.

Disabled my anti virus and tried. Still no luck
Help !

Fortunately, the game registered that I had finished the mission, so I was able to launch the next mission from the main campaign menu.

Life goes on.