Did you modify the original IR files for this mod? You might get in trouble for it, it's against the license.

I originally did as a quick solution but in the newest release i remade the sprites while keeping a similar look to IR2.

can I grant permission for using these texture?but I only want to post mod in public domain so it might be a problem..

the shadow sprite is still the IR2 shadow sprite, in the next update ill remove it and just fetch IR2s shadow sprite during the mod loading stage. as far as the chest sprites go, i tried to mimic IR2s texture by pixels without most of the detail. I don't mind if anyone wants to modify them or redistribute them in anyway. ill probably change them over time to be more unique but at the moment im currently working on new conveyor textures.

If you recreated them, I think it should be OK. At a glance I couldn't tell the difference between the two bronze chest sprites, except that the star was missing. It was the older version though.