Well, I can say it's not my scripts, it's something to do with the Google Cardboard script. For some reason, it is getting a false from the System value for RenderTextures (....if (!SystemInfo.supportsRenderTextures && value != null)...), for some reason they're not supported on your setup right now, whether that's a unity thing or the version of cardboard, I can send you the older cardboard version I used, it may help since it never used render textures. It also may be that the newer cardboard sdk isn't compatible for Unity 4, the older one was. Maybe try downloading everything again and start a fresh project? I really don't think you should be getting those errors, that is a bummer!