Hi can anyone help me out?! I have a Samsung Galaxy Tab S and bought a 128gb micro-sd to be able to store films for my 3yr old, but when i download films directly to the card i then get a pop-up saying "sorry this video cannot be played" !!! And i make sure that what i download is either avi or mp4....i can download with no problem to the tablet itself and it will play, but if i move it to the sd card i get the same popup!! Its really frustrating!