Clicking 'Play' causes Sketchup crash all the time.

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What steps will reproduce the problem?
1. Download latest version of Sketchup for Mac
2. Download sketchyphysics plugin
3. Unzip sketchyphysics, and copy contents of 'SketchyPhysics3.2-Dec-2(MAC)' to 
'/Library/Application Support/GoogleSketchup 8/SketchUp/plugins'
4. Launch SketchUp (note sketchy physics tools appear, no error messages)
5. Press 'Play' (either with some sketchy physics objects, or no objects at 
all).
6. Observe SketchUp crash, and error reporting dialog box.

What is the expected output? What do you see instead?
I expect the simulation to play without crashing.

What version of the product are you using? On what operating system?
Sketchup 8.0.14345
SketchyPhysics 3.2
MacOS 10.6.8 on an intel iMac

Please provide any additional information below.

This also occurs if you select an object immediately after opening the 
application and opening the Sketchy Physics Inspector

I notice a small window that sometimes pops up right before crashing.

Original issue reported on code.google.com by scott.de...@gmail.com on 5 Jul 2012 at 4:38

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Same issue on windows

Original comment by JSebasti...@gmail.com on 3 Oct 2012 at 5:37

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I'm having the exact same issue. Anyone have a solution?

Original comment by bran...@thehoffmanzoo.com on 12 Jul 2013 at 10:44