PlayList Problems

when i first got my meizu M6 i made several play lists and used them fine. for some reason after a while i anytime i make a play list on my computer (M3u) and movie it to the play list folder on my M6, it doesn't work. i'll open the play list on the player and it will be empty. it also does this when i try to edit an old play list that was previously working. someone please help!!!!

are there any drive letters inside the m3u-file? If so, maybe you should delete them.