@"Tomcat" #p102357
Errors in Blender, Godot has nothing to do with it.
The model is made for Blender 2.9x and you open it in 3.4 is a potential problem.
I wondered, but it never hurts to ask.
@"Tomcat" #p102357
If you upload the downloaded files somewhere I can take a look at them and try to come up with a solution.
I can't get it to upload, it's too big (almost 600mb). Even trying to put it in a project file of its own and zip it is too big.
I think I found a workaround. Maybe, possibly. The gltf will (apparently) export the animations. The model is still unusable, but I can save them as *.tres files. But for some reason I can't get them to attach to the skeleton on my good model. Even working backwards and taking the good model and slipping it over to the good animation, it won't attach. I have it set to the skeleton rig in the inspector, but in the timeline, it only shows a generic node with horserig/Skeleton.

I feel like I might just have to download 2.9 and export from there grumble grumble
Edit: Downloaded 2.9, and it won't even export. I get even more errors.
Edit 2: Finally got it to export, still more eldritch horrors. But that's a Blender issue, not a Godot thing, so I guess this issue is closed in this forum.