sorry to resurrect an old thread, but i'm having this same issue. i have a 4G ATT blackout.
it worked last year, other than dropping the signal frequently. firmware revisions seem to have addressed that issue.
now, however, when i request HD copies of thumbnails, i am getting the "pict-001-101--1,jpg missing" message.
when i pulled the card the other day, there were zero photos saved, although the camera had sent 3000 thumbnails in that battery cycle.
i will attempt to format the card, then replace the card if that doesn't work. i will report back with my findings, but if anyone has other suggestions, feedback will be appreciated.