This happens to me the last Saturday. I choose to take the quest at the warlock cave, however, when I can complete the quest, no more talismans were available. My friends told me "you cannot complete the quest!", so if I cannot complete the quest, even if I found the talisman, it is impossible to enter at the crown of command isn't? The quest should be finished to allow me reach the crown, no matter if the character found the talisman somewhere else, but it cannot be complete because no more talismans are available.
How do you solve this situation? Can the player complete the quest if there is not talisman available?