Fixed a bug that was causing frequent crashing, especially when playing in the Chinese language. This also has some stability improvements I made while trying to fix the actual crash - including backing up save files. If the game crashes during saving, it'll now make a saves.sol.bak file - and when you load the game, it should automatically read that file. Hopefully, this will lower the amount of players losing their saves, but I'd still back up files or use the Aground Cloud just in case.