Hi, I just upgraded my factory to the new version of the mod, but now when I click on the factory item input combinator, it shows this error:

The mod Factorissimo2 Playthrough (1.1.8) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Factorissimo2-Playthrough::on_gui_opened (ID 86)
Factorissimo2-Playthrough/scripts/gui.lua:6: attempt to compare number with table
stack traceback:
Factorissimo2-Playthrough/scripts/gui.lua:6: in function 'create_buttons'
Factorissimo2-Playthrough/scripts/gui.lua:85: in function 'create_interface'
Factorissimo2-Playthrough/scripts/gui.lua:256: in function 'toggle_interface'
Factorissimo2-Playthrough/scripts/gui.lua:281: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>

Could you please send me your savefile? I can't see what's going on

Here's the savefile: https://www.mediafire.com/file/ibceoy8b9l0c6pn/factorissimo.zip/file

To repro this issue, install the latest version of this mod (and factorissimo), load the save (the other mods aren't required), go to the top-level factory building, and click the factory item input combinator.

Weird. Do you remember with which mod version you started this playthrough? Was it 1.1.7?

Yep. I also noticed that in my savefile, I can still modify the input belts. Maybe during the mod upgrade, it needs to replace all existing inputs with the unmodifiable versions, or something like that?

Yep, pretty much. Found the bug too, a completely stupid one from me. Caused by adding in extra mods and me doing something that I don't even understand.

Should be fixed in 1.1.9. Fixed some other stuff that I just noticed too.

Awesome, thanks! It works for me now.