System Information
windows 10 Pro 64bits
Nvidia GTX 1070
Blender Version
Broken: blender-2.78-67bef6b-win64
Worked: blender-2.78a-windows64
Short description of error
'Opensubdiv compute' is not displayed definitely in Userprefs.
Exact steps for others to reproduce the error
[blender-2.78-67bef6b-win64]
[blender-2.78a-windows64]



