Sphere created using primitives_3d.py cannot be viewed

[CWallbridge]

I am creating a sphere using the primitives_3d.py. Creation appears to work fine. When I try to view the world with the sphere I get the following error:

python uwds-view l2tor
INFO:underworlds.client:Connecting to the underworlds server on localhost:50051...
INFO:underworlds.client:<3D viewer> connected to the underworlds server.
INFO:underworlds.client:Accessing world (initially created on Fri Jun 09 11:42:56 2017)
INFO:underworlds.core:Preparing world for 3D rendering...
INFO:underworlds.core:Loading node
INFO:underworlds.core:Loading node
INFO:underworlds.core:Fetching mesh <2061698958>
INFO:underworlds.core:Serialized mesh in 0.01sec
INFO:underworlds.client:Closing context [3D viewer]...
INFO:underworlds.client:The context [3D viewer] is now closed.
Traceback (most recent call last):
File "uwds-view", line 1267, in
main(args.world, args.host, args.port)
File "uwds-view", line 1219, in main
app = Underworlds3DViewer(ctx, world=world)
File "uwds-view", line 291, in init
self.load_world()
File "uwds-view", line 483, in load_world
self.glize(node)
File "uwds-view", line 469, in glize
self.prepare_gl_buffers(mesh)
File "uwds-view", line 409, in prepare_gl_buffers
meshes[id]["vbo"] = vbo.VBO(numpy.hstack((v,n)))
File "C:\Python27\lib\site-packages\numpy\core\shape_base.py", line 288, in hstack
return _nx.concatenate(arrs, 1)
ValueError: all the input array dimensions except for the concatenation axis must match exactly

I am guessing there is something wrong with the sphere mesh.