No really, what use was that? It’s a beta, yes a real beta as opposed to a product demonstration. There are crashes, simply telling us they are there does not help to identify them and their cause.
“I don’t know why” crash reports are helpful, but mostly only if you send the debug files to the developer so they can see what code actually threw the exceptions, etc.
Its good of you to update the tread with useful information. However, you can’t fault me for reacting like that when you post a topic that is little more than, “zomg it crashes!!!”.
there is a current crash bug relating to playing against challenges that have been uploaded in a corrupt state. However, a new game, that has been fought against the existing singleplayer missions should not be crashing at all. Is that happening to you? If so, have you tried disabling everything on the options screen (all the checkboxes). That might indicate that its a specific visual effect causing problems.