Seems kmix crashes when trying to change volumes after upgrade to qt-5.6.1. See also upstream bug, http://bugs.kde.org/364141
This bug appears to have been reported against 'rawhide' during the Fedora 25 development cycle. Changing version to '25'.
kmix-16.04.3-2.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b9b9942c19
kmix-16.04.3-2.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-373c953ec0
kmix-16.04.3-2.fc24 seems to have fixed it on this box.
kmix-16.04.3-2.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b9b9942c19
kmix-16.04.3-2.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-373c953ec0
kmix-16.04.3-2.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
kmix-16.04.3-2.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
*** Bug 1359896 has been marked as a duplicate of this bug. ***