I am new to Blender and have never done any 3D animation or scene before.

I've created this wrecking ball scene after a tutorial.

themightylc.bplaced.net/WreckingBall.blend (4 MB)

Problem is, it won't animate anymore when I start the animation with Alt-A. The timeline "ticks" but everything stays in place. I have done nothing but the modeling, changing physics and running the Animation. No idea how or why to use keyframes. Could that be the mistake? Did I ruin this file somehow? If i can't "reset" this, please tell me what i have done wrong to avoid this in the future.

Thank you

  • $\begingroup$ I started over and the same thing happened again :( - I wanted to make the "bottom plane" shorter. After that edit the animation bugged out. I DID NOT SAVE the file and just reloaded it instead. Now it is stuck again at the first frame and nothing happens when i start the animation. $\endgroup$
    – themightylc
    Aug 18, 2015 at 11:55

1 Answer 1


It would appear the physics cache may be the issue. You can either set the start frame to 1 and play, then set it back to 40 or you can re-bake the simulation. In the Rigid Body Cache settings you will find buttons to "Bake All Dynamics" and "Update All To Frame", either will get things running again.

enter image description here


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