The nightly builds will move to a new build system (from qmake to cmake) in the coming weeks. In theory that should not change anything from user perspective, but as always real life can be a bit more tricky than anticipated. So if you are using the nightly builds and see something strange happening (missing files, strange version numbers, wrong icons, ...) please report by commenting: https://github.com/openscad/openscad/issues/3652 ciao, Torsten.