The graphic "transformer-rail-part" does not load correctly. (Not the high resolution graphic, but the standard resolution one. But I haven't tested the high res one)
I was able to fix it by adding 1 extra pixel to the right edge of the image, and 2 extra pixels to the bottom. As in the code, the sprites are defined as having a combined width and height of 194x756, while the actual graphic is only 193x754. So the sprites are outside the bounds of the graphic, which makes Factorio unable to load the mod.
