Everything was working fine. I was running openscad for about a year by clicking on a menu item in gnome running on a Centos 7 workstation. It looks like on April 18 a new version2567 of OpenScad was installed. I don't think that I have opened a model since then. Can not find any of my .scad files with a date after April 18. I now have some things to design. OpenScad does not work now. I used snap to remove and reinstall openscad-nightly When I try to run openSCad from the command line $ openscad-nightly /snap/openscad-nightly/2576/usr/bin/openscad-nightly: error while loading shared libraries: libQt5Core.so.5: cannot open shared object file: No such file or directory $ sudo ls -lad /usr/lib64/libQt5Core* -rw-r--r--. 1 root root     917 Nov 16 11:44 /usr/lib64/libQt5Core.prl lrwxrwxrwx. 1 root root      19 Nov 19 21:49 /usr/lib64/libQt5Core.so -> libQt5Core.so.5.9.7 lrwxrwxrwx. 1 root root      19 Nov 19 21:48 /usr/lib64/libQt5Core.so.5 -> libQt5Core.so.5.9.7 lrwxrwxrwx. 1 root root      19 Nov 19 21:48 /usr/lib64/libQt5Core.so.5.9 -> libQt5Core.so.5.9.7 -rwxr-xr-x. 1 root root 4936272 Nov 16 11:49 /usr/lib64/libQt5Core.so.5.9.7 shows that  libQt5Core.so.5 should be found What should I do to restore life as I once knew it? -- Ron Wheeler Artifact Software 438-345-3369 rwheeler@artifact-software.com