Awakening of Evil

In the 2nd mission, during the 5th month, I wander around and can't join the Thieves' Guild; when I click on the Thieves' Guild building, nothing happens.
1. When I try to play against Gurk, 10 gold is deducted, and that's it.
2. When I click on the Sphinx to answer the questions, nothing happens.
3. I've gained reputation with all 3 factions; only capturing castles remains.
4. There's still an unclaimed Fairy dwelling with the Elves; I can click on it, but nothing happens.
I think it's due to the game version; please advise what to do.