If you have outdated packages, these commands will replace those packages with the most recent version.
!!! note
Warning: The GeoModelExplorer (GMEX) application appears to crash when run on the latest version of the Ubuntu "Wayland" window manager. The problem is that the SoQt/Coin third-party packages we use in GMEX have not been ported to work to the latest Wayland yet. As far as we know, all applications that use the Coin/SoQt graphics layers as their graphics interface crash on the latest Wayland. The Coin3D community is aware of the problem but there are no fixes, yet.
We strongly suggest to use the alternative X11 window manager when running GEMX (or all other SoQt/Coin3D-based applications) on Ubuntu, for the time being.
## macOS
On macOS, we use the [Homebrew package manager](http://brew.sh) to handle and install the GeoModel packages. If you don't have Homebrew installed on your machine, you should first install it by following the instructions on the Homebrew website: <http://brew.sh>. Please be attentive to any instructions printed after the installation procedure; there might be environment variables to set.
