Happened again today. There were about 100 Raw (PEF) files on the SD card. When I tried to import them into Adobe Lightroom, I was told that five of them could not be imported for various reasons. Lightroom tells me the file names of the files it can't import. I wrote down the names of the files, quit Lightroom, opened the card on my desktop, and copied those five files to a folder on my hard disk. Then I tried to reimport those files from that folder. One of them was imported this time, but Lightroom now told me that the other four were either damaged or in a file that is not supported.
This has been happening fairly often - often enough to be annoying. Almost every time I import more than a few photos, at least one file won't survive the import process, at least not when I do it from within Lightroom. Fairly often, I'm able to copy the file directly from the SD card to a folder on my hard disk, and then import from that folder - and that works. But not always. Today it worked for only one of the five problem files. Today's photos were mainly test/practice shots and I didn't lose anything valuable. But in the past, well, I'm not sure.
The five files that wouldn't import today were all from the middle of the shoot. Four of the five files were consecutive pairs, that is, if the files were numbered 001 to 100, the ones that didn't import were numbered
027
044 and 045
059 and 060
I'm stumped. Don't know whether it's the camera, Adobe Lightroom, my computer, or what. Any suggestions?
By the way, I have and use three different cards: a Transcend 150x 2GB card, a SanDisk Extreme III 2 GB card, and a Kingston 1 GB card. It was the SanDisk card that had problems today, but I've had problems with the others as well. I format the cards in the camera - usually by simply erasing all the images (rather than by using the Format option in the Menu).
Will