Certainly you didn't enable some required DLC. Which Tech pics are missing?
Never mind,i fixed the problem myself, you see, every part of the mod (Balance/Buildings/Units) has it's own IconAtlases.xml. When someone extracts the first part of the mod, and then extracts the second one, it'll override the previous one's IconAtlases with it's own (or not), resulting in only one part being used by the game. I fixed this by manually copying the text from Super Power Building and Super Power Units's IconAtlases to Super Power Balance's IconAtlases.
-----------------------------------------------------------------------------------
Speaking of balance, i need to tell you of a couple balance issues :
1. Ethiopia basically obsoletes France since in the early game you'll get higher than +2 culture (yes i know Ethiopia is supposed to be tall unlike France which is supposed to be wide)
2. The Miniplenty is ludicrously OP as building it is wayyyyy faster than starting the Apollo program itself.
3. I don't know what you're going for with the Burj-Al-Khalifa but 88888 gold is basically an instant win.
4. The Ministry of Peace on the other hand, is underpowered since it only gives you half of Great Firewall, yet it requires a building that you will never build unless you got absolutely nothing else to build.
5. You had the chance to fix the mandatory NC rush but you didn't do it (the NC is still mandatory if you want to gain any sort of a lead).
6. Korea is now totally underpowered as +1 culture is nothing compared to +2 science or even +2 culture (it was so bad that i personally buffed them myself to +2 culture from specialists and +4 culture from GP improvements).
7.Iroquis is still in the "12 in a 10 point scale of bad" territory as they didn't get buffed at all (maybe you should make the "treat forests as roads" ability work everywhere instead of just in friendly territory ?)
8. Japan nearly obsoletes Aztec as making a unit is faster than killing it (nearly because of Floating Gardens).
9. Nerfing Egypt's wonder production bonus isn't compensated by giving them a free Engineer.
these are the most glaring issues i've found, there'll be more when i play test this mod.