After I install tripmaster 1.8a my internal speaker on my 720 and 920 quits working when I use the hands free for my cell phone. I have to try several different things to get it to work. I do a reset, reboot, reinstall the phone and other things I cant remember. Finally it will work for a couple of boots. If I delete tripmaster the internal speaker works fine with my cell (hands free). Is this happening to anybody else? Thanks, Doug