HELP WITH R4

hey guys ... here's the problemmy r4 card doesnt allow me to make room on the micro sd card ? i can delete stuff but it doesnt free the roomeg : delete game thats 50mb still says i have 15 mb free it has gotten to the point were i only have 1 gb of games on a 2gb card and i cant put anything else on ???

Backup your files and format your card. Maybe the file allocation table is messed up.

Happened to me before, weird thing was i just had to empty my recycle bin AFTER i deleted stuff off the card.. I can't remember how i eventually fixed it so i didn't need to do that anymore, but i think it was a registry bug.

THANK U SO MUCH WORKED A TREAT