This is fresh Leap:42.3, supposed to be stable. I've done a bug search and review of cdrskin, it is mainly a drop in maintained replacement for cdrecord for distributions that don't have cdrecord. You as bug owner should make the decision about either patching the message out or requiring cdrskin but meanwhile the message looks bad. I haven't got a spare CD/DVD/Bluray to find out if cdrskin works for me and in fact would rather carry on with cdrecord with which I've never had a problem. The bug I referenced in the kde bug I reported isn't closed yet.