Klauncher could not be reached via DCOP. I *need* Klauncher :-(

I had an apparently working system, so I decided to take a deep breath, cross my fingers and install Slávek's patches. All appeared to go swimmingly. But now if I try to launch almost anything via Klauncher I get the message above. Application names preceded by kdesu appear to launch without a problem. Klauncher was working well before I installed the patches. Yes, daft, I know, not to leave well alone, when I had an operational system. But I fancied having the patches. I work almost entirely via Klauncher. The fact that they have messed around with Klauncher is one of the many things I dislike about KDE4. Is there an easy solution? Or shall I just reinstall and stop at 3.5.13 without patches? :-( I am NOT giving up. I have been pig-headed since I was a baby. It is bit late to change now. Lisi