[QUOTE=Android.Ninja;50728888]I have tested and can confirm following these directions to the letter on a rooted device, does solve the problem on the Samsung Galaxy Note Pro 12.2 - SM-P900. I'm now able to write & save to my Sandisk 64gb HS SD card without any problems at all!
I can write to the card now too (same card) but only by manually copying files over. I guess I was expecting to be able to relocate apps to the new card via the regular system menu but so far it seems that just does the same fake 'move to SD' as before.
I've used foldermount in the past with some success, but when I went to try it tonight I got an error message on start I'm not so sure about. My main goal will be to relocate apps to the external card (and comics).