Was once a very satisfied user, but am now sick of this app! Numerous bugs (on my 4g Apple TV, 2014 iMac and most recent OS) have already been mentioned and contacting support from this maker seems pointless since most who've tried report that they get no response. Worst of all, I've found Beamer sporadically refuses to play even common .mp4 and .avi movie files and if it does, it plays them only for a few minutes and then disconnects. At this price, there should be regular bug fixes and updates, but that doesn't seem to be the case. Shame on you Tupil!