I solved a CEGUI error by updating my drivers. Have a try of that and see how it goes.
Click for a guide about updating drivers
Game = Eden Eternal. Server = Server merged server name. Old server = Sapphire. Old server = Garnet. Guild = Objection. IGN = Zetsumei418. Old IGN = [GS]Kuma. Old IGN = Zetsumei418