I already have a time when not playing for the same reason.
My main character "Dverhate" freeze the game when using the kafra to go to prontera, after almost one year without playing. install new patches back hoping to take my bug (failing to categorically).
I moved a secondary character prontera (Ranchero) to see if it was some item he had "Dverhate" but the result is the same. prontera frozen.
Create a new character (which has already deleted) and the game froze from the first map.
Uninstall the ragnarok 2. Download the 6.2Gb, the new launcher for tips Draobyek (RO2 Community Representative) install and download the latest patches, open my account and surprise Dverhate and Ranchero freeze the game.