the music/sound stops and the game acts like its still processing britian's turn, but upon minimizing Civ 5, i'd notice a "program has stopped working" error for the game. The crash itself occurs when it's britian's turn.
also, I have turned off scripted events and the crash still reliably occurs. perhaps its related to macbook pros? how new are all those file versions? My machine has 16 Gb RAM, so i definitely meet the 4 Gb RAM requirement. This scenario is labeled as stable, so it may be possible that this is a new error. Im experiencing this problem playing as the greeks in the europe 1939 scenario (not the small version). I'll lay out some versions (these are all ww2 related files):