Just released a minor update for wade.physics, that fixes a couple of annoying bugs:

• BugFix(B02): Setting a mass for objects that have previously been defined as static crashes the physics engine
• BugFix(B03): The PhysicsObject behavior, if not initialized explicitly calling init(), is cloned incorrectly when its parent object is cloned

As usual, let us know if you find any bugs and we'll do our best to fix them asap