If you experience excessive error rates when viewing Traffic analyser using CBus Diagnostic Utility and on removing you C-touch unit the errors disappear. Then check to see if you have any monitoring of temp sensors or light level sensors. If so do these units physically exist at the correct unit address on the network. If not when the C-touch polls the unit and it fails to recieve the info back errors will be produced. Have a look at the attachment for the Traffic anayliser view for a project missing just one temp sensor that the C-touch was Polling