**System Information**
Windows 8.1, Intel I5, Sandy Bridge, HD Graphics 2000
**Blender Version**
Broken: 2.73a
**Short description of error**
When changing scenes, collision shape of some rigid bodies changes to BOX shape.
**Exact steps for others to reproduce the error**
1. Open {F142111}.
2. Make sure you see stdout of blender to see the assertion failing. (i.e., Toggle System Console on Windows)
3. Press "Run Script" on "test.py" opened in the Text Editor.
4. Notice that the assertion on line 10 fails. (The rigid body changed its collision shape inadvertently, while changing scenes.)