Gui-less (omitting 'pglgui' from install) is ok on Ubuntu Server 20.04 following Tee's advice. Using kubuntu-desktop (Qt 5.x) so can't install Qt 4 dependencies to get gui rolling. Have not checked build/install on Gnome. Crosschecked Nginx logs with pglcmd log and it seems to be watertight. 'pglcmd.defaults' does however put itself in /usr/lib/x86_64-linux-gnu/pgl/ Was thinking about pitching in and take a look at Qt5 to see if I could update Qt4 bindings. Seriously busy with web dev atm but will...