In the meantime I used KNS from http://techbase.kde.org/Development/Tutorials/Collaboration/HotNewStuff/Introduction (with a few little corrections) and made it build and run. It runs fine, I can see the wallpaper images no problem. On pressing the close button the app finishes normally without a crash.
For code see here: https://bitbucket.org/mkae/kde-tests/src/9b358fdbe20f/HotNewStuff/ and here is some output: https://bitbucket.org/mkae/kde-tests/issue/2/hotnewstuff-on-mac-os-x > An instance of KNewStuff3 is used in Dolphin. > Settings -> Configure Dolphin... -> Services -> Download New Services... > The dialog that pops up has a view which uses a delegate derived from > KWidgetItemDelegate, so if that crashes too then it might give us a > clue. OK, but luckily I have Dolphin installed as well and can test your service dialog. That test showed that Dolphin was able to open that dialog and even downloaded services… BUT, when I tried to call Dolphin's about dialog I got a crash straight away: --- QWidget: Must construct a QApplication before a QPaintDevice QKqueueFileSystemWatcherEngine: error during kevent wait: Bad file descriptor KCrash: crashing... crashRecursionCounter = 2 --- Here it wasn't even necessary to enter the Authors tab, Dolphin crashed before the dialog could be shown. :-(
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