I have the same problem and dispay as error code: 19:9:18:1618:101
1 – when enter in dungeon with a party the game crash with this code
2 – If i try relog with the same toon I can’t and crash again in log-in phase with the idem code
3 – for relog in game need switch charachter for unlock the access of the precedent character (if not the log-in is impossibile for point 2)
4 – enter inside dungeon in solo (without party) don’t give that problem
hope that info could help you to solve that problem. Have nice day!