I'm using WaveFunctionP version of Interstellar, and i have a problem with swapping fuels. Clicking on "swap button" doesn't do anything. I have 4 empty UF4 canisters (Witch makes space for 3200 units-200 more than needed), and another 4 canisters of ThF4. Reactor is disabled and cooled down. Is it becouse actinides?