**System Information**
Operating system and graphics card
Windows 7
If you want the graphics card, please give me instructions on how to find out what it is on my computer
**Blender Version**
Broken: (example: 2.69.7 4b206af, see splash screen)
2.75 a
Worked: (optional)
**Short description of error**
A fresh version of Blender was downloaded and when I try to open the User Preferences ... window either from the File menu or using Ctrl-Alt-U the program shuts down. The only thing I did was to add a folder to the addons directory. Its purpose was to change the Render to Pixar's RenderMan. The name of the folder is PRMan-for-Blender-Master.
**Exact steps for others to reproduce the error**
Based on a (as simple as possible) attached .blend file with minimum amount of steps
Just try to open User Preferences ...