Oh haha no I'm sorry to hear that it broke so late in, that's really aggravating. I agree, it seems to be the physics engine being pushed too hard in the wrong direction. But I'm happy to hear you liked it enough to try again! Did you complete it in the end? If not, there's a cheat in the game description that allows you to skip the puzzle and go straight to the party.
Thanks for playing, did you have any suggestions?