Haha, yes indeed... Ae CC 2014 (v13.0.2.3) MacOS 10.8.5, and as Mr Zogg mentioned, the problem comes from trying to render to a PNG frame/sequence... in my case I've got a cinema 4D lite file in after effects and am trying to render out the animation as a PNG sequence. (sRGB linear colorspace seems to have something to do with it?) I can render to Quicktime no probs, its just something to do with sRGB not working with the PNG export... which is a pain because thats the best way to export animations with transparency.
thanks for any thoughts.