I have a metaverse game that won't load (I get the prompt to "Send Microsoft an Error Report" as it tries to load). My other games load. What are the known causes of a game failing to load? I may have accidentally removed one of the ships it was using from my Metaverse/Ships folder, which I imagine could do it, but is there anything else I need to remeber to try not to do?

(Bleh, I was two weeks from a tech victory too. I'll never find out whether there's a medal for lots of tech victories at this rate.)