I've got a problem w/ one of the Japan maps & an occasional one w/ another but same problem for both. I'm using build 1320698644 & if I load the Japan small map as a skirmish or if I encounter it during the game it drops back either to the main menu if loaded as a skirmish or back to world geoscape if a mission during the game. If I load the Japan large sometimes it works other times I get the same problem as on the small map. I've attached my console.log from when I loaded the Japan small map as a skirmish.