Skybox in StarterContent in blank project in UE 4.5 & 4.5.1 is producing error during building

Skybox in StarterContent in blank project in UE 4.5 & 4.5.1 is producing error during building. The error is:
LightingResults:Error: Error Skybox Object has overlapping UVs.
LightingResults: Info Skybox Lightmap UV are overlapping by 50.0%. Please adjust content - Enable Error Coloring to visualize.

Hi Angelz,

This is a known issue with the light staging area only with regards to the sky sphere. It won’t affect anything other than having the warning message appear.

Thank you!