Character Stuck - Buffer Underflow

Hi,
good night. My character name is NowItBlows.10 minutes ago i was playing my character when the game crashed with the message "Buffer Underflow". Now, everytime i try to login this char, they dont let me in with the same error message.The other characters are fine. Just this one is not entering the game.
I tried to verify files integrity. Nothing changed.



Appreciate the help.