I just tested it in version 1.0.1 and yep online crashes too (The last time I played it with friends was on a different computer so that's probably why). Both the Steam and the downloaded Windows version have the same issue. I press play, it gives me the loading screen, plays an alarm sound and the start of the music, then crashes after a second or so. I checked the error logs, and they give a 0xC0000005 exception. I've tried all the usual fixes to said exception and they don't seem to work.