Hi!
Every time when I enable OSL in the render settings and try to render Blender crashes. It crashes right away when I go to an interactive mode or when I try to preview a material swatch or when I simply press the Render button.
I tried to install Blender on different computer and it crashes all the time when OSL is enabled.
My setup:
Win 7 64bit
Corei7 3770
16GB RAM
QuadroK4000
The second computer had the same problem… and it has the same Corei7 3770, but 8GB RAM with GTX card.
I think it is a bug.