My 302, fairly new, has suddenly decided that when I turn it on, it won't see the extra memory card. This is on the device itself and via USB. Taking it in and out registers the hourglass, then usually nothing. Sometimes it works. The card is clean, and works in my card reader, camera etc. Sometimes re-seating the card or turning the device on and off works and they reappear....but usually not. This has been happening since yesterday.
I'm on 15.2 (not sure which incarnation of it), and until now, haven't had much trouble.
Any suggestions? Is this a firmware issue? A hardware issue? A setting issue? I have to admit, if I have to send this device back for repair (the first one I received was defective), frustration and rage may occur.

:/