I extracted your save file and tried to drag it into www but didn't work. I got the same error message: WinRAR can add files only to RAR or ZIP archives. If I only had the master save file already installed then I'd probably be fine. Thanks again.
Then the problem doesnt relate to RPGmaker or My New Life game, it must depend on the folder the game is installed or how is it installed because of that message "WinRAR can add files only to RAR or ZIP archives"
You dont need to create a master save file from version 2.0 to version 2.1 if you copy the master save file of v2.0 with your savegames
try to uncompress the rar file with the savegames to another folder in windows, and then drag the "save" folder into your "mynewlife/www" folder without using winrar or so, then you shouldnt get any error message from winrar as you are only using windows to move the files, and if you do have that error message should be bc the winrar file is not unpacked