these buttons were added a loooong time ago, like at least 6 months, I think, and there were a lot of changes since then, so not sure what could have broken with an old save, especially if you have other mods. But as a quick check, are your mutation and bionic labs damaged by any chance? This was also introduced a while back, that you needed the lab to be actually operational to do augs.

yeah about 7/8 months since I played last. my other mods shouldn't change ui, and your the only ones still updating and working on your tftv mod, great work by the way, its my fave. I tried testing with different combos of my mods. turned out to be the old supercheat mod causing some kind of conflict. worked fine after removing old mod. thanks for the reply and support, better response than I've had with official dev support for a lot of games