I am running Ubuntu 16.04 on a 64 bit system. I was until now using the stable release of KiCAD, but decided to have a go at trying new features with the Nightly build. The stable release was showing PCB 3D renders just fine (Pcbnew->3D Viewer). Yesterday after switching to the Nightly repo, the models were lost: I’m seeing a flat PCB with traces, silkscreen etc.
Also, the “Add 3D Shape Libraries Wizard” is showing that the program cant access /usr/share/kicad/modules/packages3d/ directory:“It is not possible to write in the selected directory. Please choose another one.” (I ran KiCAD as sudo and downloaded designated packages from the KiCAD GitHub repository, but it did not help (still no components)).
I’ve searched around and found that some Windows users have just had to write in a correct path to KISYMOD3D. All the folder addresses in my case are correct (KISYMOD3D path is /usr/share/kicad/modules/packages3d/).