This mod doesn't hold up on its own, so if you're not curious as to the leftover M4-78 resources, skip this mod. It requires TSLRCM, which you should have anyway.
You will find a clue on how to get to M4-78 in Korriban's Sith Academy. The planet is only available after finishing Korriban.
A product of years worth of effort, this is pretty much mandatory to install. Since an official patch of major was released today for Kotor 2, I've decided to compile a list of good mods for it.
Alternately, I've read that you can solve this issue by installing the Extended Enclave mod after Kreia's Assorted Robe Collection, although I do not know if this solution works with TSLRCM 1.8.4. The solution is to uninstall your Kreia-skin altering mods for the duration of this module. If any Kreia-altering skins or mods override this, the result is this black screen.
This is due to the module using a custom Kreia with special animations for the cutscenes. IMPORTANT NOTE #3: Using the Kreia's Assorted Robe Collection mod causes the screen becomes black when loading the Jedi Masters scene in the Rebuild Enclave.