[0.17.66] mod mismatch OSX client/linux server

[jshufro]

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 contents are different even though versions are the same. The most common cause of this is improper Mod Setting usage (conditionally requiring files based on mod settings). This can also be caused by modifying a mod files on the client or server but not the other.

Which is concerning because he's also doing:

[~/Library/Application Support/factorio/mods] [] [kube:dev02nym2]
$ md5 boblogistics_0.17.15.zip
MD5 (boblogistics_0.17.15.zip) = b48cdec9e6b0a74645783e6906374a46
[~/Library/Application Support/factorio/mods] [] [kube:dev02nym2]
$ md5 ~/Downloads/boblogistics_0.17.15.zip
MD5 (/Users/jesmet/Downloads/boblogistics_0.17.15.zip) = b48cdec9e6b0a74645783e6906374a46

to compare my .zip and the one the automatic sync placed on his system (please ignore his kubernetes-related PS1)

My windows machine is able to connect to the linux server no problemo. He's perfectly able to connect to the same host running a mod-free version of the game on a different port, so connectivity isn't an issue- just the mod thing.

[jshufro]

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

[eradicator]

You quoted it yourself:

The most common cause of this is improper Mod Setting usage (conditionally requiring files based on mod settings).

You should thus report the bug to the mod author.