I searched our Tab2 forum and seems most of the threads were either unresolved or not the same issue as mine. I was running a normal SanDisk Micro SD 32gb card. It crapped out so I decided to swap over to a SanDisk Ultra 64gb card as I have the 32gb version in my S3 with no issues. I read about the formatting issue and needing to change it to Fat32 which I have. Prior to this I did not format using Fat32 and instead formatted with the Tab2 instead. I thought this was the cause of my headaches but seems even after formatting with Fat32 it still hasn't been resolved. I transferred video files from my pc that work perfectly fine to my sd card since I travel alot for work. I use MX player but also tried Mobo during this period to see if it was a player issue as well as the stock player. One of the first issues is that the Tab2 sometimes won't see my card or won't see the available memory I have on it, or read it wrong entirely ie says I have 128mb free when I know I have over 30gb free. So now I've formatted using Fat32 and haven't had enough time to see if that problem still comes up but the other issue is that my video's don't play. Or they play on one try but won't play again on the next. I bought my SD card from the Samsung store so I'm assuming it's not fake. So can anyone shed any light on the matter?