Why is a purple light/texture appearing in rendered view? I'm rendering a low-poly building/skyscraper for a city that I am creating. I have been following this Blender Guru tutorial  on YouTube and my models and textures have been looking great, but now when I go to render cycles is appearing weird with a black background and a pink shading. Here's a screenshot: I understand that my lighting isn't great yet, but I don't understand the pink colors.

Thanks ahead of time.
It was because I had moved the textures to a new folder. Oops. 
and you have to link it back......find the texture location