Ah, biomancy might have just been showing the wrong result then
Edit: further updates
Corruption selection no longer crashes my game, so long as the thing that I selected didn't happen or nothing happens at all. This happens both when trying to use backlash and rigged successful, on both slaves and my PC.
Update 2: Backlash on my PC, when cast by my PC, seems to work semi-consistently and doesn't crash my game
Biomancy:
I am still running through all my checks at the moment, but I think that one is working as intended. I'll probably still take a look under the hood and see if there is anything I notice.
Corruption:
If nothing is happening(like it fizzles or or disperses) or if something you didn't choose happens, then it could be a couple things.
The first is that it's working as intended. If the target cannot be afflicted with that effect, then it will cycle through until it finds an effect that can work. If it loops too many times, it will play the "nothing happens" text.
I deliberately left that in my mod.
In the first few... well, several, runs of the mod I found that if I tried to alter Corruption too much, there was the persistent risk of nothing being able to fire because of a check I missed, resulting in a crash.
So I left the preexisting safety net in place in order to reduce risk and stress.
If it's triggering something you didn't select, that's also a result of the safety net, though I'm still trying to figure out why it sometimes does that. I know sometimes it happens because the "double trouble" event is triggered (which is built into that safety net, making it hard to remove), though only the extra event plays, as it still tries to play the one that was selected but can't.
As for the crashes you're still experiencing, I'll try and smooth some things out in RAGS, as I can't seem to replicate them after downloading the current version. I know where the issue is happening, so I can take at least take a guess at the problem.
Shouldn't take long, though I'll upload in the morning after going over it with a fresh pair of eyes.