Yeah ReadPixels? doesn't work for me on The New iPad. I suppose it cehkos on the retina resolution. So on the New iPad I had to use RenderTexture? which doesn't really work because it has to be a power of 2. So I just used 1024 2048 to approximate the retina aspect ratio. I guess there is no perfect solution. But I still think you might have a path issue on iOS. Also remember they changed ReadPixels? in 3.5 so that it only works on OnPostRender?.