The problem is that your Digital Picture Frame is only compatible with SD cards, not
SDHC cards. You bought a larger card for your Digital Picture Frame, not
noticing that it was SDHC (or not knowing that it mattered). The new
card doesn't work, not because it or the Digital Picture Frame is broken, but
because
it's not compatible.
Cards up to 2Gb are generally SD.
Cards of 4Gb are generally SDHC.
Cards over 8Gb have to be SDHC.
(There are exceptions. Sometimes, manufacturers make 4Gb SDHC
cards but some have errors; they disable half of the chip and sell it
as 2Gb, but it's still SDHC. 4Gb cards are almost always SDHC because
they're cheaper, but 4Gb SD cards do exist. They are so rare that I've
even seen a guru on this site claim they don't. I did own one once, but
it was very expensive and turned out to be so unreliable that I had to
return it. I
don't recommend
looking for one, because of the problems.)
Your solution is to go find a 2Gb card, and be extra sure that it
doesn't say "SDHC" on it.
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