UPDATE 1.3.2:
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Fixed a problem where the localized texts were not working in some servers, for multiplayer. If you were playing on a server and you were seeing ugly code names for the fixtures and items instead of the nice names and descriptions, this update is relevant for you. Thank you very much to
stealthcold for the big help finding the problem.
A very tiny update, only bug fixing. You only need to update the mod if you were experiencing the problem with the localized texts not showing up, otherwise you can wait for the next update

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Thanks for the reply and glad you got it working!

Would you be willing to share how you managed to get it working correctly so I can share this fix with the other mod developers whose mods are producing the same issue?
Thanks again for the help!
Sure!
In my case the reason is the silliest of reasons. In some of my first mods I used "localization" as a name for my localization txt. While it works fine in local, and in many servers, there are some servers that do not accept that name, because they are case sensitive, and require the file to be named "Localization" instead. Which is what I have been using lately, but not when I started making mods a few weeks ago. And while I have updated those mods many times, with more stuff and whatnot, never changed the localization file name because it seemed to be working fine and never thought about that...except it did not work in some servers.
So it has been a big headache for me lately because I could not reproduce the issue, the localization file structure had no errors, and the only thing I knew was that the server was not sending the files to the client...

. So that is the reason in my case: I am silly

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I have also discovered that some servers have also problems with custom tags in the header included in the localization.txt, and with custom tags I mean different than the vanilla, so that can cause similar problems too. So that might be worth checking too in other mods. And of course any errors or typos in the localization can also cause the localized texts to not show up, so that is also important to check out.
In any case it is fixed, so I am super happy about that, because frankly, I spend quite a lot of time thinking about nice funny texts and descriptions and it was frustrating that some people could not see them

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