Everything has been going well until recently. I simply plug in my mp3 player via the usb hub and copy tunes into the mp3 folder...simple,not any longer!! When i try it now i get the message "parameter is incorrect" and it will not let me transfer files in any way. Even tried copy and pasting and dragging...but nothing! Can anyone help me please because i haven't got much hair left, i'm pulling it out in chunks here!