Still didn't answer last location... anyway the wierd part is if it was a regular disconnection you would get the please wait 30 sec for character data to save. Well for now I have no idea what to do try guess you should uninstall and reinstall like Akira said.
Last resort wait for nexon to see and answer your ticket? Well do that after uninstall and reinstall though.
EDIT:OH sudden idea I had corrupted character data and this worked of it but I have no idea if this will work for you but in chace or something (starts with C) in the mabinogi folder it shows evey character/pet you ever played on delete that but dont delete anything that doesn't have a character name. But make a copy of it first in case you accedentally do something bad and the game stops working period. (Seriously I'm out of ideas just spitballing stuff.)
Oh I know what that is! That's called clearing the cache data for your character. In the case that your character data may be corrupt, you would just have to delete the file that begins with your character's name and it should get rid of any corrupted data on that character. I think the ones that don't have names attached are really important, so don't delete those.