Hi there! I LOVE this mod like you wouldn't believe.
But, after trying 2.1 experimental (I'm still using it), I'm getting this crash error...
Failed to load mods: Nanobots3/data-updates.lua:14: attempt to index field 'tool' (a nil value)
stack traceback:
Nanobots3/data-updates.lua:14: in function 'item_exists'
Nanobots3/data-updates.lua:24: in function 'safe_replace'
Nanobots3/data-updates.lua:52: in main chunk

I'll be around if you want me to try whatever. It's most likely some kind of incompatibility with another mod, right?... Ty for your time.

Hi! Thanks again for the detailed report — and for the kind words!

I've just released Nanobots3 5.9.1 for Factorio 2.1 with a fix for this crash. The issue was in data-updates.lua: the prototype lookup wasn't safely handling prototype tables that may be missing.

5.9.1 is now available on the Mod Portal.

Since you're still running the 2.1 experimental build, I'd really appreciate it if you could update to 5.9.1 and let me know whether everything works correctly with your current mod setup.

Thanks for reporting it and for offering to help test the fix!

Can confirm that everything runs smooth now! Ty so much for the quick fix deployment! Love to see it.

Awesome! Really glad to hear everything is running smoothly now. Thanks for confirming the fix, and thanks again for taking the time to report the issue. Enjoy the mod! :)