Heroic_Spud

Hi, I'm drawing very close to the end of the game but i am having a couple of annoying diffculties, firstly the geosphere displays more missions than there are, though this has been covered in another thread. More importantly, 2 researches are unavaliable, acid weapons and mass breeding, the required pre-requisites are acid grenades and beastman shaman interrogation. The only problem is i have both of these. In my stores i have about 70 acid grenades and i remember distinctly having captured a shaman in one of the missions. I even did another beastman missions and claimed more acid grenades in the loot. Any help would be much appreciated. Thank you.