Issues when loading town saves copied to the SD card from a Mac

[LtSneer]

When using a Mac to copy files to the SD card, it creates duplicates of those files with the ._ prefix and then the rest of the name (example: ._garden_plus.dat). This is a quirk of MacOS, and normally those files are hidden. When TownManager tries loading the save, it tries loading all the files in the folder (including the files with the ._ prefix), and fails to launch the game.

When TownManager fails to launch the game from those .dat files, it actually does write the files to the game save. If TownManager is closed and reopened from there, it backs up the currently active save file in the game to the wrong town folder (the last successful launch from TownManager, if another town was launched previously) and overwrites the .dat files there. This results in save backups from one town being overwritten with another saved town. (I keep frequent SD backups on my PC, so nothing was lost)

It would help in this circumstance if TownManager asks to confirm that you want to back up the current game save when the application is launched, instead of automatically backing it up. (This would also help when copying hacked saves from the computer to the SD card, so that you don't have to open another town first to prevent the newly copied file from being overwritten with the current game save.)

Also, a filter that prevents TownManager from opening files starting with ._ would keep it from glitching when used with files copied from a Mac.