I believe he's talking about the actual quest pop up window, the new one gives the quest, a description of it and tells the reward(s). I've been playing with that window trying to get it functioning so that the error box no longer pops up when given a new quest, but am running into some problems with it. The background for the box isn't showing and the Description and reward page are still showing in default, however the error msg isn't popping up anymore. If anyone is willing, I wouldn't mind some help seeing what I've done wrong lol.
