My skybox became... Ugly?

I have the moonlight skybox on in my render settings and it looked fine at first. Further into my development I have just noticed the skybox looks really… weird…

[10925-new+bitmap+image.jpg|10925]

This is what it looks like. Any ideas on why the skybox is altered? I even tried other skyboxes from the assets folders and they have this strange error also.

Have you tried changing the import settings of the picture files?

I had the same issue. I think you just changed your build settings so your game was targeted to iOS, Android, or Blackberry. If you want to build to one of those, you should use your own skyboxes; the defaults have issues with mobile.