After the latest update, Sane Concrete now produces the "Error loading mods" window when starting the game. I disabled all other mods to ensure it wasn't a matter of compatibility, and reinstalled it to make sure it wasn't something old left over causing problems.

This is what the window says:

"Failed to load mods: Sane-Concrete-2/data_updates.lua:26: attempt to index field '?' (a nil value)
stack traceback:
Sane-Concrete-2/data_updates.lua:26: in function 'update_recipe'
Sane-Concrete-2/data_updates.lua:31: in main chunk"

Thank you very much for reporting the issue!
I failed to test without the Quality mod active.

Version 1.1.2 has been uploaded.

Thank you so much for being so timely with the fix!
So glad to see it, as I dreaded having to go back to making concrete the old way, haha.