RYUMS.SPF Update failed. Wrong file size.
I downloaded the game from the papaya website, I finished the installation and when I started the launcher it immediately updated some files. After some minutes of updating, I got an error message that says "RYUMS.SPF Update failed. Wrong file size.". I took a print screen of it here: https://i.imgur.com/ThSWN9p.png?1
Please, tell me how to fix it so I can start play the game.