Best advice is: NEVER research anything else than than harmony related research, not even diplomatic stuff. Only the fleet size increase and more capital ships. The research achievement is bugged I think and it does niot give the achievement if you research diplomatic stuff. Though I may be wrong, cause I earned that achievement long ago.

Didn't touch diplomacy, only researched harmony. When the last one was researched I double and triple checked all had been researched.

Baron

Did you play the game online (through Steam) or offline?

When I played offline and completed the "Achievement" - It was not recorded.

It could be that Steam requires you to play online to 'achieve' == Bug in Steam??

I believe you need to be online in Steam for it to record the achievements.

To answer some of the question in my failed attempt at getting the harmony only achievement:

I was logged into Steam, as other achievements were registering as and when I got them in the same game

When I researched the last part I then paused the game and went through each research to make sure I had not missed any part. Each research showed the grey tab in the bottom right and I also went into each to check I had not missed one part of say 3 stages. They were all completed.

Is it because I did Capital improvements? I was doing and got the Capitals only achievement.

I cannot remember but maybe if I clicked on the other research trees, but did not do any research, that would invalidate the achievement?

I am going to have another go this weekend and will let you know if it works or not.

All the best

Baron

Those of us that have had no trouble in getting this have found that we are all doing the Science Victory option. Seems how that is found in the Civilian Research area that may be why those that aren't doing that option don't seem to be getting that achievement. Try doing it that way and see if you get it.

Update:

I managed to get the TEC Civilian Research achievement on my fifth try by not researching anything at all outside the Civilian tech tree, not even Fleet Logistics.

The point about different Victory options may be true. I haven't tested them - but the main problem still is, of course, that all achievements should work properly in a "regular" (i.e. all Victory options off) game too. My gut feeling is that the problem is somehow connected to the introduction of Steam. This is because I bought all the pre-Rebellion stuff when they came out and played all iterations of the game for endless hours, getting all achievements without a single "unregistered achievement" event.