You make my day, Derelict ! Thank you 
About the virtual bones, I don’t even know what they are but I already see that when I reimport a skeleton, I have to reexport and reimport the neofur assets that use this skeleton to avoid strange behaviours (I do this on the T-pose).
It’s a bit annoying but since I know the problem, I deal with it ^^
I will take a look to the warnings one of these days but I have to admit that I’m actually working on a non neofur project and this fact alter my motivation a lot 