User blog comment:MasterBroccoli/Genie Editor 3/@comment-27426837-20160501115109/@comment-139.5.239.180-20160507042025

Make a backup of the original .dat file on your PC. You don't need to reinstall everytime. You'll need the original file to Multiplayer or distribute your modded file if you want to use that to play multi. I'd suggest mediafire for uploading your files.