problem with tdelauncher

Hi I am running Ubuntu 16.04 (64bit) and 4.14.06. Since yesterday I have the following problems 1. when hitting an icon in the panel I receive TDElauncher cannot be reached via DCOP. 2. When trying to copy the icon to the desktop I also obtain cannot talk to tdelauncher. So I have to log out and to logout, then it works for a while but not for long. What is the issue here? Regards Uwe Brauer