Blender crash/Noraml Map node/Cycles preview

My blender keeps crashing after i add a normal map node and switch to render preview mode. In the same file i’ve already used a noraml map node on another material and did not have this problem.

Without the file it is hard to say what happens, upload it.
Helpful is also Blender version, OS, video card and driver version.

Cheers, mib.

Blender 2.67, Windows 7, GTX660 ti driver 320.49.

edit: nevermind, uploading at blendswap

Here it is.

Saved at the node editor, material in question.

Im having a issue with blender closing when i click [file] then [user preferences] blender closes… anyone have any ideas?