https://ibb.co/FBHmH6V

Here is the error message.

Okay it does not want to work with Deadlock forked mod.

Atm the mod calls files from the original beltboxes mod, which requires specifying the mod path.
I have no real way to figure out if you're using the original or the forked variant, or any other variant, so I can't know which mod path I need to use to get the files I need.

Yeah it just does not work with forked version.

Atm, no plans to fix. It might not be needed in a future version, if I can figure out how to get out of needing to import files.