I have been having trouble getting pics from my camera card into the computer. A message pops up saying the card or camera is not connected, but it's properly inserted in the pro-duo slot. Occasionally it has worked, but lately, not at all. I can't keep loading up the memory card, and I like to print at home, so I'd rather not take the card to a photo shop or Wal-Mart. Any ideas?? Thanks in advance.