Hello,
I am playing on version 1.9.0.0.9687 with some of the WWII maps. Consistently I am getting "IllegalArgumentException: Cant remove more than player has of resource" errors during the Japanese (Hard AI) purchase phase. I have found that after I save and load the game later, that none of the players have any money to buy new units. Attached is the log and save file (saved once I regained control from the AI at the start of the American turn).