There should be an edit button above your post.
As for the bug - you did do it 'correctly' so the bug should not have been triggered, I guess you have tried again from your save game? As for those crystals I don't think you have got stuck I can't remember exactly to tell you where to go but there is a walkthrough on the main site www.arokhslair.net
If you don't have an earlier save game I can upload one of mine so you won't have to start again from the beginning. Its best to keep multiple saves in case of problems like this.