Hi,
I'm trying to build my first URDF model, following this tutorial:
http://wiki.ros.org/urdf/Tutorials/Building%20a%20Visual%20Robot%20Model%20with%20URDF%20from%20Scratch

Booth replicating what's done there, and cloning this repo too, I can't see any mash or shape in rviz, only transformations; here's what I see from chap.4 code:

There should be cylinders and squares...

Anyone experiencing this issue? I'm running ROS Lunar, Ubuntu 17.04 x64 on VirtualBox 5.1.18 (with "3D acceleration" disabled because i don't know why, if it's enabled rviz trows segmentation faults at start)