Playing on a 2006 Intel Core II duo Mac OSX 10.7.5. Had pulled down a map from here called Europe 240X220. I buzzing through my game and at about 1620AD when the program cycled at the end of a turn it came back to where the units were moving (workers working etc) but the message in the info panel still said Please Wait like it was still cycling. However, I could save, look at my cities etc but I could not move units. I could not quit either I had to Force Quit. At this point this game database is obviously corrupted and I could go back a few turns but has anyone else experienced this? Rather maddening and I am afraid if I go back a few turns the same thing will happen. Thanks.