Hi,
I found the Setting...Connectivity...USB and it was already set to PC Link. Tried connecting it again and suddenly it worked.
Haven't tried the SD card again, that's plugged directly into my laptop right now so I can just load everything that way. I'll try putting it into the PB302 later to see if it recognizes it now. I'll take a look where you suggested, Mick, if I still have problems but I doubt I'll let the PB302 try to format it. Toward the end my old ebookwise insisted on reformatting pretty much every memory card I put in it and none of them worked anywhere else after that. Since then I've been leery of letting any reader format a memory card.
Thanks for everyone's help!