Okay, loaded up 1.42 this morning, and all of a sudden about half of the modules I have unlocked are showing up in the design screen as locked again. What gives?
1.42 changed the game to have some modules that were previously ‘free’ as locked from the start*. So this should only be previously never-locked ones.
If you don’t have the the honor to unlock them, and want it, just email me and I can tell you how to cheat the honor 
*This was to make the game less overwhelming on first play-through.
Or mod in a laser with 9 tracking, a tiny firing interval, and an outrageous range, for 1 credit. 
No, I’ve got the honor, and I don’t mind unlocking stuff I haven’t unlocked before. I just didn’t want to get shafted by paying honor twice for the same modules.
It’s a sensible thing to do for the next round of newbies. Good idea!