Use Tangent Shading in materials

Sorry for my English (Google Translate).

I'm having a problem when I try to use the Tangent Shading option in the material settings.
When this option is enabled the objects are completely black, both in Fast Preview and after exported.

What am I doing wrong?
Should I activate anything else together to work?

Thank you

*Edit* I think it works after you do a UV map. Once I UV unwrap the sphere, the Tangent works.
Second Edit: Ya, the effect changes if you do a different style of UV unwrap.

I have never used Tangent before so I tried it out. I noticed sometimes it works and sometimes I get just black. I have two files attached, one that works and another that does not. I don't know why one works.

What am I doing wrong?
Should I activate anything else together to work?

Sorry, it's a bug, we will fix it in the next release, but for now you need just to create an epty UVMap and it will work propertly.

Thanks a lot for the help Will Welker and Mikhail Luzyanin.
The UV map tips worked here.
I just created a blank UV map with UV Unwrap and it worked.

Will Welker: Strangely enough, his two files worked well

Mikhail Luzyanin: Thanks for the great support given to users. The tip was also very good