I have a ultima pro sdhc 32gb class 6 card for my camera canon 550d i have had it 6 months and has been fine all of a sudden i cannot access my card or formatt it on my camera.the error is:....card cannot be accessed reinsert/change the card or format card with camera i have tried everything to resolve the problem.can anyone help.
if the card is ruined what card should i buy n why????

Kind Regards

Lee