PC Version - DKS - Downloaded from Larian Web site
The Shaman that drops the key seems to be behind the locked door and thus inaccessible. This breaks three separate quests:
A Hunting We Will Go Again
The Grave Robbers
The Gremory Treasure
This is a fun game, but the number of bugs is somewhat surprising and unsettling. More and more when I'm stumped by how to continue, I have to go to forums and game guide sites to determine if there's a bug or if I just missed something. And usually I find that it's a bug.
Other bugs have included the missing Rune Keeper Troll, various villains not being where they're supposed to be (such as Stone, his henchman with the creature; another of the bandits from the Hunting quest is displaced into the water, etc.)
It's especially aggravating since the Ego Draconis portion of the DKS has been out for so long now. I can't imagine how many bugs I'll encounter in the second, newer, half of the game.
I didn't mean for this to turn into a rant, but my confidence in the game and in Larian Studios has been shaken. Perhaps I've just hit a rough patch where the various bugs have followed one upon the other, but if the pattern continues, the game will be too annoying to continue with.
Any response would be appreciated. I will find the proper email address and send a Save Game with the Imp Cave bug momentarily.