The same bug that appeared in 1.0.19 is still present in 1.0.20. Here is the error message when loading the mod. This is with Factorio at 2.0.55 and the only installed mod (besides space age, quality and elevated rails) is Moshine and it's dependencies.

Edit: I just tested and the bug seems to be with minimalist-rails. I get the same error when loading only that mod without Moshine.

Failed to load mods: The given sprite rectangle (left_top=252x252, right_bottom=256x256) is outside the actual sprite size (left_top=0x0, right_bottom=4342x0).
See the log file for more information.: minimalist-rails/graphics/entity/rails/rail/rail-stone-path-inside.png

Mods to be disabled:
• minimalist-rails (2.0.2)
• Moshine (1.0.20)

Damn! I found more images with the same problem (problem being that when I turned them fully transparent and applied some compression to them, the color mod changes and apparently, your game doesn't load them anymore, but they load on mine)

Thanks for the report, I published a fix on the rail mod

Thank you! Mod loads now!