Minecraft version: 1.12.2
Galacticraft version: 4.0.2 (build 280)
Forge version: 14.23.5.2846

On a SP opened to LAN

Only GC-related mods installed are : MicdoodleCore, GalacticraftCore, Galacticraf-Planets
Playing on the FTB Revelation modpack

Galacticraft was downloaded from micdoodle8.com.

First of all thank you for your efforts developing this mod, we've been having a lot of fun with it !

I'm re-opening these issues since the problem persists in the latest build (feel free to delete this if you consider it a duplicate but since discussion is closed on archived issues, I thought it would be appropriate).

micdoodle8#2819
micdoodle8#3954

That is, players in a LAN world cannot trade with with Alien Villagers despite having a frequency module equipped in the right slot.

There are no logs in the client or host pertaining to the issue.