I just made the 64-bit Mac build live. It has been on a beta branch for about a month.
Also, I know it has been a long time between updates. I've been very busy on another product to just pay the bills.
It is just me (Kevin Ryan) on Contraption Maker right now. Still planning on updates to Contraption Maker when things slow down. It is not dead. Really wish I could spend more time on it. Looking forward to getting that Moon part in there.