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I have a Box2D simulation going on and a system that loads the bodies and its' shapes from a text file definition.

I create a new physics world, i load bodies into it, from one of these files. Everything seems to work fine, collisions included.

Then, i attempt to create a really simple one-shaped body from code, just like the most basic tutorials. Lets say a circle.

The circle appears fine, starts falling with gravity, and as soon as it hits a static body, both the circle and that body disapear. As simple as that. The body the circle is colliding with is in this case a ground static rectangle.. Pretty straightforward!

I think im setting everything just the regular way, but i can edit this question with more information if pertinent. Sorry for the lack of detail.

So, anyone knows any circumstances that could cause such an event?

EDIT: For some reason, seems to work in Debug builds, but no in Release.

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closed as off-topic by Anko, bummzack, Sean Middleditch, Josh Petrie Jun 21 at 1:15

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That could be anything really.. maybe a high restitution setting that makes your bodies bounce so hard that they just leave the screen? –  bummzack Oct 29 '11 at 17:15
    
restitution is not being touched, a static body should not be harmed at all by collisions with dynamic objects. –  Grimshaw Oct 29 '11 at 17:26
1  
Sounds like a NaN resulting from the collision operation. Which Box2D implementation are you using, and is it stable? Also what are your physics params set in b2World. –  Nick Wiggill Oct 29 '11 at 19:04
    
Im using 2.2.0, the official release. b2World is pretty much virgin, with a regular gravity vector, adequate to a scale-factor of 100 pixels per meter. Also, sleeping bodies are enabled. So, do you think it can be a "corrupt" setting in one of the colliding bodies? –  Grimshaw Oct 29 '11 at 19:11
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@DevilWithin: If that is the correct answer, please answer your own question and checkmark it. –  Samaursa Oct 31 '11 at 2:38
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