I'm not sure what causes this but I have encountered this odd issue on multiple version of firmware on the 220 series. When I start a recording the play button is missing which is used to start sharing content while recording. I can still enable content using the remote so the PC is still synced with the 220. To fix this, I have to reboot my 220 and the play button then reappears. The difficult thing about recording on a 220 is that the 2nd gen phone will not let you leave the recording window without terminating the recording so you can go back to the home screen to access the normal presentation button that you use in a call. This is just a little difficult to explain to clients, if the play button is missing and no remote in the room, our clients are basically out of luck.