It just suddenly went. The last time I used my rMB was four days ago, everything was fine. But then, when I used it again now the haptic feedback in the trackpad is suddenly missing. Funnily enough it's still sounding like a click when I disable "Silent clicking", and force touch still works. Is it in anyway related to El Cap? (Me uses a beta version 15A278b). Any help appreciated. Am backing up in Time Machine now, in case a clean install might help.