Mayan Artefact problem

Okay I got my last piece this morning, and when i placed it down and finished the Mayan Calendar nothing happened. The quest didn't complete and I didn't get any new quests or a Mayan character. Anyone else have this problem?

EDIT: I just had to rearrange the pieces, there are a few ways to make the circle. Incase anyone was wondering, the answer to the question the Mayan asks is 'the Zune'. You must answer it correct the first time otherwise you miss out on the 10 free donuts.