Demonz312 Yes, I was able to get them from there too. I think the missing reference is from the missing files from Spine's side (I could be wrong). This is because their documentation states:
"Copy the Godot C# assemblies from the downloaded Godot editor ZIP file to that folder. These are the files you need to copy:
I am assuming they mean from the file downloaded from this site. Also, they state:
"This configures the godot-nuget directory to be a package source for NuGet packages. Instead of fetching the official Godot C# assemblies from the NuGet package registry, the assemblies from the godot-nuget directory will be used, which also include the C# bindings for the spine-godot runtime."
I am by no means an expert, so I am hoping to find clarification/help here.