curious issue with kaffeine and sat-card, "no device with suitable settings"

I am getting from time to time the block of the application with the following error message: Non è stato trovato un dispositivo con impostazioni valide o i permessi di accesso sono errati. Controlla la finestra Configura televisione. In plain English that is: a device with suitable settings was not found or the access permissions are erroneous. Pleas check within the menu "configure television". When you check there all is normal. Closing the app, restarting it, solves it immediately. I am curious if someone might have an idea were the problem comes from.