Failed to load mods: The given sprite rectangle (left_top=0x0, right_bottom=64x64) is outside the actual sprite size (left_top=0x0, right_bottom=32x32).
If this is being used as an icon you may need to define the icon_size property.
See the log file for more information.: RampantArsenalFork_Firestorm/graphics/icons/incendiary-shotgun-shell.png

The other forked RA can load properly however

that is very interesting, since it's something i haven't touched myself ^^
can you send me a mod list of yours, which is active when this error is being triggered, so i can reproduce it.
Thank you!