Two times i had a problem when i was unable to ask for quests. Thirst of all i couldnt get the quest from the master thrower to get her that powerful throwing weapon. And now i cant get any thieves underground quest after completing the initiation quest. I just dont have any option except saying goodbye. What can be the problem and how to fix it? Is it perhaps because of intelligence? How much intelligence does one need to get the underground quests?