Help with identifying physics error

I just encountered this bug while deep into development, and I'm not sure what to look for:

The error occurs after a while, even if the game is just standing still, with all events turned off.

Are you using any 3rd party plugins?

Which effects are present in your project?

This thread appears to have a similar error and a solution.

Does it help?

If not, please consider posting the .capx.

I did manage to fix it, and it appears that it was a similar problem. Some animated objects that had physics caused it.