I cut power to the whole base and returned to my mall to discover a bugged inserter.

The assembler it was unloading was backed up:
https://i.imgur.com/z1PVEm6.png

The inserter would not unload:
https://i.imgur.com/u2lefKd.png

The chest is not full, the assembler shows "item productrion ...

For posterity: copying mod-settings.dat from my host to his solved the issue

I'm running a modded headless binary on a host on my local network with a handful of mods (seablock).
I'm able to connect from my windows machine no problem, by my friend/coworker using the same mods is unable to connect from an OSX machine.

He's seeing
Mods mismatch detected!
boblogistics: Mod ...