Upload & Sell: Off
The issue has been resolved! Sandisk has a firmware upgrade (I don't know if it's been released yet) for the cards that have been purchased by D4 owners. When I contacted them, they told me to send them my 16 gig card and they would replace it when they received the new cards with the new firmware installed. They said that would be faster than waiting for the firmware to be tested and released. I sent the card in. It took about a month, but to their credit, they sent me a 32 gig card back as a thank you for my patience. The new card works like a charm.