I have all the necessary items to release D'Soto. But I cant get Haleabus to move from his room. Am I missing a step? What needs to be done? Thanks in advance.

*SPOILER*
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You need to place all of the elements in their holders in the library, along with the masque in the center. After the sparks fly, grab the mask, and then give it to Haleubus. He'll have a fit, and then you can commence to wailing on him.

Thanks, I didnt know I had to GIVE him the masque. And here I was trying to lure that beast up to the library. Appreciate the help.

There goes another game I cant finish without some help!