Unity's "5/11Clustering" hang issue solved

So this is just a quick post to help those of you who may be facing the same issue I was today when trying to build for iOS and/or Android in Unity.

I kept getting "5/11 Clustering" box and then it would just hang forever.  Turns out it's a super easy fix.

Simply open up the "Lighting" and uncheck the "Auto" checkbox.  I was pulling my hair out until I figured that part out.