Hey guys and gals,
I dont know if this is the right thread for asking this, but I have a problem with fuelswitching in my (early) career. The game ist heavily modded (KSPIE, some Near Future parts, a lot of other part and gameplay mods).
To explain ... I am not able to switch the fuel in all of my tanks. I have unlocked just the first ones (before 45 tech node). But I have a contract to test an cryoengine in the next node ... all tanks show in the preferences - window, that they are able to switch - I also see the context menu when I am right klicking the tank respectively I get to the switch option which ist provided by KSPIE. But it only shows me the options to switch to LF, LFO, LO.
And here is the thing. I tested it in sandbox mode and it works just fine. It shows me all fuels and I can switch to them. Then I started a new career save, where I checked, if I have to research specific nodes in order to unlock the ability to switch. The first cryoengine is in the rocketry 45 science node (I use community tech tree of course) and the first cryotank in a 90 science node. I assumed if I unlock both, then I will be able to switch at least to liquid hydrogen. But I was not.
Then I tested, if it has something to do with the VAB Lvl or maybe the R&D Lvl. Nope ... it has not. In career I was not able to switch the normal fuel tanks at all. The cryotanks worked with the other switch - interface. Same in Science mode, where I researched the first tech nodes and the KSC is at max obviously.
Is this a subtle bug of some kind or do I have to research specific things in order to unlock the ability to switch? I was longer absent from the game and I am not rly familiar with the gameplay concepts around other fuels.