I have updated bzmods and others and got this crash on startup. BZ mods i updated are bztitanium and bzcarbon. I do not have Salt & Chlorine and Natural Gas mod installed but all other bz mods and SE + K2 +.
8.263 Loading mod bzfoundry 0.2.8 (data.lua)
8.268 Error ModManager.cpp:1560: Failed to load mod "bzfoundry": bzfoundry/prototypes/categories.lua:14: bad argument #1 of 3 to 'insert' (table expected, got nil)
stack traceback:
[C]: in function 'insert' bzfoundry/prototypes/categories.lua:14: in main chunk
[C]: in function 'require' bzfoundry/data.lua:3: in main chunk
8.270 Loading mod core 0.0.0 (data.lua)
8.392 Checksum for core: 3744854889
8.475 Error ModManager.cpp:1560: Error in assignID: recipe-category with name 'crafting' does not exist.
Thanks for the report. Neither of the updates you listed should have caused this issue. I've uploaded a small change that might help. If not I might need to know what other mods you updated, etc.
I tried the new version, the error for your mod diapered, instead I have now an error with Gizmos Car Keys (improved) mod, so I will also open a bug report there too.