Fixtures are not attached to body correctly

[Bannana97]

I'm having an issue with Box2D.
For some odd reason, as shown in the screenshot below, objects aren't colliding correctly.

Snapshot:

http://sufr.in/i/lRfW50x.png - See how the ball isn't touching the ground? Well, that gray block does this at random times, no idea why.

Could someone review the source and see what's up?

[Boolsheet]

The ball isn't touching the ground because there are bodies under it that don't get drawn.

Instance.new calls the setup function with the default values of the object. The :update() method then calls the setup function again, apparently with the correct values.

[Bannana97]

Okay, so on update() is there a method to remove the old body?

[Bannana97]

Thanks, everyone here rocks. I LÖVE this.

I used :destroy() to remove the old bodies if exist. Now, tons of bugs are fixed and I got callbacks working.

Thanks so much! <3 <3 <3