For some reason the modifications your mod makes to the mutations from Mutation Changes aren’t coming through.
If I load a game up with the mutation changes mod first, PK’s second and your patch last, all of PK’s stuff works correctly, but I only get the unmodded version of mutations from “Mutation Changes.” If I manually shuffle them around in the mod list, so that PK’s loads first and ‘ms’ loads second, I only get the unmodded version of both.
I’m frankly not sure what’s going on here. I’ve looked through the Mutation Changes files a bit, as well as PK’s files, but I can’t identify anything in Mutation Changes that should cause it to behave differently.