If you have "force ASDS skins" option checked, and don't have a b42 of Anthro Survivors Deceased Skins, it won't spawn any furry zombies (since there are none that are deceased, and that's a requirement to spawn one).

Beyond that, check for Furry Apocalypse errors in the console.txt and paste them.

I'm having this issue too, but it suddenly came up in existing saves, though there is nothing that I was aware I changed. Do you have any ideas of what I could do to troubleshoot? I tried a save with only this mod and its dependencies installed, but nothing seemed to work with and without the "force ASDS skins" option checked. Thank you for your time either way.

asking me or coldsteel?

I haven't checked on the game in a good while, but seems like b42 ongoing updates break a lot of stuff. For now I suggest simply reverting to b41 until the whole "rolling beta" shenanigans blow over.

Anthro zeds mod cause problem with spawnrate it prevents anthro survivors to load in b41 and custom ones are always set to nan and can't by set to other number than 0 just check spawnrate string and if there is no anthro species and all other have nan than number in spawnrate % that is propably problem but idk how to fix this nan

Uninstall Anthro Zeds. Furry Apocalypse completely supercedes it, and having both just messes things up.