It makes no sense to supply images at various resolutions that are powers of 2 and then again with scale 2
I got warnings like this:
.... No image found for point size: 16 at scale 2. .... No image found for point size: 32 at scale 2. ... etc.
Well guess what? That image you found at point size 32 scale 1 IS the image for point size 16 at scale 2!
Basically all of the "scale 2" stuff should go away (and be automated by the plugin by choosing the next point size up if it is available) and the top point size should go one level further.