I rescued Halsin and got the rune of the wolf from Rath. When I go to put it in the stone socket I got an error that it was an invalid combination, and the rune remains in my inventory. However, it also shows in the stone socket now, and I can get it to light up. I click on it, and the other 3 runes, but the stone wolf statue doesn't change into the stairs, down to the treasure/cache. I ahd read that this had happened to others several months back, but I thought it was fixed. Is this a new bug, or just an old one still with us?