Ever since the latest patch, I can't start the Rebellion beta. When I run it, the steam window pops up saying 'Preparing to launch Sins of a Solar Empire: Rebellion Beta'. The window then closes, but reopens almost instantly, closing again within half a second and reopening. This cycle usually continues indefinitely, though it has once given an error code (error 80). Any ideas? I don't think there are any crash logs, since it usually just cycles indefinitely. Any ideas what could be causing this? I've both verified cache integrity and deleted and reinstalled.