I have previously used a sony IM750 MHL adaptor to playback downloaded films onto a panasonic plasma GT50 series.The IM750 and TV were connected with a good quality HDMI cable. I recently downloaded android 4.4.2 but now when I try to playback  a film I get a message on the tablet  'premium content cannot be played on this screen because it is not secure'. Films still playback on the tablet though. Why do they say my tv is not secure and does anyone have any knowledge of how to fix this.