Nah, no real reason. Just wanted to avoid any issues it might cause, but we need to update Spine so guess we gotta take the plunge. I'll try now and see if the error goes away.
Well... the error's gone, but looks like I have to redo all of the SkeletonData files and the mix data and everything... 🙁 Is there any way to, well, not have to do that? I have backups to start over if necessary.
Is there any more graceful way of updating than deleting the old spine-tk2d files and importing the new package, which causes all Spine references in prefabs to be missing too?