Howdy everyone. I'm getting an issue on a WebPlayer build, only when running on OS X Yosemite. This problem is a bit difficult to explain, so I'll illustrate it with some screenshots. Basically, my problem is there are rainbows. Screenshot number 1 : In this screenshot you can see a mirror using a Render Texture which randomly turned rainbow at some point. Screenshot number 2 : Don't mind the blur effect on the upper right side, this project is licensed so I had to hide texts. This comes from a different scene which only contains a camera with no image effects, a GUITexture, and some GUI labels and button at the bottom. For better understanding, this is what it should look like : Screenshot number 3 : In our game, the player is able to put on or remove clothes by opening a panel. To display it, we used another camera looking at a copy of the character. Basically, when you open this panel, we're lerping our cameras Viewport Rect. This is what it should look like : But this is what happens on Yosemite : At this point, I think you had understand what's going wrong. As I said earlier, this is only happening on Yosemite with a Web Player build. Don't know if it may be of some use, but we're using Marmoset shaders (http://www.marmoset.co/) and Highlighting System (http://forum.unity3d.com/threads/highlighting-system-released.143043/). If you have any idea about the cause of this issue, or if by any chance you saw something similar lately, please tell us, I'm literally lost here.