:Failed to load mods: rubber-ducky/add_ingredient_to_ducky.lua:49: attempt to index field '?' (a nil value)
stack traceback:
rubber-ducky/add_ingredient_to_ducky.lua:49: in function 'add_ingredient_to_ducky'
rubber-ducky/data-final-fixes.lua:59: in main chunk

Mods to be disabled:
• rubber-ducky (0.2.0)

Got a lot more from the log file if you want it.

Oh, I fixed that in my local. Let me push it up

Go ahead and grab the latest version.

Got further. Different error now.

10.455 Mods to disable:Failed to load mods: Error while running setup for recipe prototype "rubber-ducky" (recipe): Duplicate item ingredients are not allowed (inductor1 exists 2 or more times).

Mods to be disabled:
• rubber-ducky (0.2.1)
• pypostprocessing (0.2.3)

I just uploaded v 0.3.0, which has major changes to a lot of stuff. Can you let me know if you are still having this issue?
This version also introduces a rubber ducky factory, which is needed to make the duckies. Gets around the 256 item cap issue that assemblers have.

I actually just had this happen to me loading up a seablock game. Looks like the other mod was editing the recipe. Adding it to the optional required mods so this loads after seems to have fixed it for my issue. Added pypostprocessing as well, so I think this will fix it for you, too.

I have many big mods, like AAI industries, Krastorio 2, 248k mod, Space Exploration, BZ mods. Latest version.

:Failed to load mods: rubber-ducky/add_ingredient_to_ducky.lua:19: attempt to index field '?' (a nil value)
stack traceback:
rubber-ducky/data-final-fixes.lua:19: in function 'find_downstream_items'
rubber-ducky/data-final-fixes.lua:15: in function 'find_downstream_items'
rubber-ducky/data-final-fixes.lua:44: in main chunk
Mods to be disabled:
• rubber-ducky (0.3.5)

Just added a catch for that. If it's still happening, send me the save file.