How to import skeletal meshes from Blender?

I am trying to import a skeletal mesh from Blender. Everywhere I look on the internet, it just seems to work. I am using the Send to Unreal Plugin and my current setup looks like this:


As you can see, it is just a single armature with a single cube attached to it. When I try to import it into Unreal, then all I get is the static cube mesh. I am using all the default settings.

Also, I have tried importing by exporting FBX from Blender and manually importing that into UE4. Again, the same Problem arises, all I get is a static mesh.