Windows 7 64-bit
nVidia GeForce GT 430
Broken: 2.72 6b2952c Branch:testbuild, mont29 build from GraphicAll.org
Short description of error
Set Split Normals modifiers causes mesh to render double-sided faces improperly, "Double-sided" checkbox does not affect anything at all.
Exact steps for others to reproduce the error
Just render attached file with Cycles, or Blender Internal.