$ LC_ALL=C kdenlive Videos/Videoprojekte/2015\ Talentshow\ Kita/Talentshow.kdenlive QWidget::insertAction: Attempt to insert null action QWidget::insertAction: Attempt to insert null action Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString) QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave. QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave. kbuildsycoca4 running... kbuildsycoca4(4241) KBuildSycoca::checkTimestamps: checking file timestamps kbuildsycoca4(4241) KBuildSycoca::checkTimestamps: timestamps check ok kbuildsycoca4(4241) kdemain: Emitting notifyDatabaseChanged () QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave. QDBusObjectPath: invalid path "" QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave. kdenlive(4190): couldn't create slave: "Unable to create io-slave: klauncher said: Unknown protocol ''. " kdenlive(4190): couldn't create slave: "Unable to create io-slave: klauncher said: Unknown protocol ''. " (process:4417): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed kdenlive(4190): couldn't create slave: "Unable to create io-slave: klauncher said: Unknown protocol ''. " kdenlive(4190): couldn't create slave: "Unable to create io-slave: klauncher said: Unknown protocol ''.