blender crashes after building bvh for cycles scene

The scene I am trying to render is downloaded from (748 KB)paint_materiels.blend (748 KB)47497 and I rendered it in blender 2.65a but in blender 2.66 RC the program crashes after building BVH .

os : win7 32 Bit
graphics card :ati radeon hd 4650
ram: 2 G
cpu: cor 2 duo