Really interesting, got about 240 turns in before the problems created the Wall.
firstly, where's Exploration Extension? I can't find it. I'm likely blind, but no support fields on starbases is a ... bit... of a disadvantage. Typically its next to logistics, in Engineering; has it been relocated, and I'm simply too inept to locate it?
Next, the Yor can't go any higher than Terraforming. The next step is Disabled for Beta. Again, slight disadvantage there.
Lastly, having the Precursor Builders bug happen with the Yor reproduction queue is more than a slight disadvantage; my capitol was hit with it around turn 100 or so, and refused to produce population, no matter what I did, and the secondary planet I picked up got hit around turn 160, but seemed to start producing pop again when I raised the cap, though it wouldn't do so when I removed population, and shifted it to my capitol.
Great work on the patch, things are coming along nicely, and for their problems, it was a very interesting 240 turns.
Regards.