I am having a similar problem, I have used HCE v0.7 before without any problems. But, when I try and use it now it goes straight to the game start menu and there is no way to exit it. So I load up Halo, load a map and play on it for a few seconds, exit, start HCE, and the game start menu pops up immediately leaving me with no option but to run halo again. Whats the problem?! The only reason I can think of is that there is no map loaded in the cache, but there most definitely should be.