Recently I was trying to download pictures from a card onto my PC and 90% of the pictures could not be downlaoded due to an "invalid parameter." I no longer have the required cord to hook the camera directly to PC so I just insert the card in the correct slot on my AIO printer. It has worked in the past. I haven't the slightest idea what a parameter is. Do I need to take it somewhere and have it downloaded to a disk then put them on my computer? Is it a setting that I have mistakenly changed on my camera? Like I said, I have downloaded pictures to my PC with method multiple times and now it won't work. HELP!! I am a picture freak and need these to download.