https://bugs.kde.org/show_bug.cgi?id=393615
--- Comment #7 from neoaet...@yahoo.com --- OK I figured it out, after several os reinstalls lol... :\ Kbuntu 18.04 release ver... Anyways to make it short it's the app menu in the title bar... I'm not sure I should try to contact Kai Uwe, of the people running qtcurve on the git repo, or what... At least it's a real bug, it was driving me nuts. I'de get it working and it would stop working, or it wouldn't work form the et go, it was like what he heck was going on... I've installed the package ver.. apt-get install qtcurve The package src via: dpkg-buildpackage --no-sign dpkg -i *.deb git ver: git clone "git://anongit.kde.org/qtcurve.git" cd ./qtcurve mkdir "./build" cd "./build" cmake .. make -j8 make install All ok... Last os install for this issue to re-verify and move on to the next config thing... Ie, installed a bunch of packages after I verified the latest git ver working from the get go... qtcurve was crashing, started to back track some of the simple config changes I had made so far before going for another reinstall.. Also grabbed the cmd history... ... Now to the point..., this error doesn't happen anymore, and I don't now what was up with it, it's not that important because there was a time when it was going off but the config dialog was working --> kf5.kxmlgui: cannot find .rc file "QtCurveui.rc" for component "QtCurve" The actual bug: systemsettings5 --> Application Style --> Window Decorations --> Buttons tab If you add the Application Menu to the titlebar it crashes the qtcurve config Live image of Kubuntu 18.04: apt-get update apt-get install qtcurve Check and see if qtcurve's config dialog works, it's fine Add the app menu to the title bar... Exit and restart the system settings app, systemsettings5... Go back and try to configure qtcurve again, crash -- You are receiving this mail because: You are watching all bug changes.