fix "unknown.rgb" path (the wrong path was the reason why we always only got plib's lowres red-white chequer-board pattern along with an error message, and not ours ... which is much prettier, but also bigger. (Should we downscale it?)
fix "unknown.rgb" path (the wrong path was the reason why we always only
got plib's lowres red-white chequer-board pattern along with an error
message, and not ours ... which is much prettier, but also bigger.
(Should we downscale it?)

slowriot/simgear,slowriot/simgear