"Err 2" Message Received on Sandisk - what do I do?

Hello!

I’ve been receiving this message when attempting to shoot on my SanDisk Extreme HD Video 8GB: “Err 02 - Card cannont be accessed. Reinsert/change card or format card with camera.” 

I’ve attempted to format but it wont allow for it! I’ve tried to do a disk utility on the card itself, and it seems to erase the contents of the card, but wont fix the error message. I’ve tried it in two working cameras and I get the same error message - so I"m assuming its the card. 

thanks!

Return it to your dealer as defective or contact SanDisk directly for a warranty replacement.