After doing "pkg upgrade" which upgraded some Qt libs it seems, I have started receiving this error when trying to launch VirtualBox (maybe the only Qt app I have now): Qt FATAL: Cannot mix incompatible Qt library (version 0x50b02) with this library (version 0x50c00) Abort After some googling I found that qt5-style-plugins was the problem in a similar case in other OS. Just running "portmaster qt5-style-plugins" was enough to fix this error and VirtualBox started working again. I am not sure this needs to be reported or it will get fixed in pkg automatically somehow but decided to do so in any case. Thank you.
A commit references this bug: Author: tcberner Date: Thu Dec 20 09:51:35 UTC 2018 New revision: 487874 URL: https://svnweb.freebsd.org/changeset/ports/487874 Log: x11-themes/qt5-style-plugins: bump revision after r487594 PR: 234199 Reported by: <basarevych@gmail.com> Changes: head/x11-themes/qt5-style-plugins/Makefile
Generally: if you upgrade Qt you need to upgrade all its consumers too. Port has been bumped to force rebuild. mfg Tobias
Assign to committer that resolved.