Hello, i have en error on startup on version 3.4.4 , i think its the lib,do you have an idea?
Failed to load mods: kry_stdlib/stdlib/data/data.lua:387: Expected string for name of data object to copy from
stack traceback:
[C]: in function 'assert'
kry_stdlib/stdlib/data/data.lua:387: in function 'copy_fields'
micro-machines/prototypes/copy-final-fixes.lua:253: in main chunk
[C]: in function 'require'
micro-machines/data-final-fixes.lua:1: in main chunk

Hmm, odd. Not the library, it's just the one reporting the error because it was given an incorrect value (likely nil). It's attempting to read the base_machine field from the entity, which I set during the initial copy process, so it should exist later, unless it's something to do with furnaces...

It would be helpful to know the mod list in this case, specifically any mods that add new machines, like furnace, assembling machines, etc. or big mods like Krastorio 2

i have over 158 mods no big modpack only lot of mods, like bobs machine(little buggy i think),age of production, some planet like...... maraxis, moshine, muluna, rabasca, corrundum, dea dia system, parcelsin,arig, hyarion, tellus, rubia, secretas et frozeta,shattered planet,vesta rabbasca......, some BZ furnace, diesel engine, gas furnace/boiler, astroponics, crushing industry, if you need more information tell me,

I was able to test with almost every mod listed above, and it loaded just fine for me. The only thing I wasn't able to check was "some BZ furnace" (which could very easily be the cause).

I may need the full modlist (best method is to send a save file with all of the mods loaded, minus micro machines, if you didn't already have a save file in progress)

No problem, where can i send you save file? ( by the way it was working finne, Two weeks without playing, but when i updated all mod, micro started to error on startup)

You can upload the save to something like Google Drive, OneDrive, Dropbox, etc. any cloud-based storage or file-sharing site, and then link it here

https://drive.google.com/drive/folders/1e3XowgPn0AVuZEHt-P0cDqRst6sEOJ5m?usp=drive_link

Requested access to the shared link

EDIT: A month later, still no access to the save, thus no way to test and/or fix