Nope. Thank you for your reply, but nope. I checked all 4 tech trees and all of their branches several times for Oceanic Worlds and Precursor Studies, before opening a topic here. Just checked again, nope. I'm playing v 0.77b with the Terran Resistance. Here is the tree branches I see:

Planetology > Extreme Colonization > Planet Adaption > Planetary Outposts, Environmental Engineering, Precursor Archeology.

Planetary Outposts > Colonial Capital Refit > Megapolis > Secure Confinement.

Precursor Archeology > Artifact Studies > Artifact Mastery.

Environmental Engineering splits into 2 branches, Xeno Conservation and Soil Enhancement.

Xeno Conservation > Atmospheric Scrubbers > Land Preservation > Nano Recyclers.

Soil Enhancement > Adapted Crop Engineering > Biomass Resequencers > Resequencer Stations.

Thanks for your help. I'm not sure how to verify my files. I went to Epic, didn't see an option. Looked in the game files too. Tried a lot of right clicking lol. 

Go to Epic Library click 3 dots to the far right of GC4 test

yeah, but you're prob going to have to restart every week or 2 anyway if u want to play the newest version. If you want to play a longer game though, click on the version of the game that just says Galactic Civilizations IV, and doesn't include Test Edition. The non-test edition version is updated less often so that people can play longer games. It just got upgraded to the newest version too so now is actually a great time to start a game on that version.