There seems to be an issue with the import dialogue in Lightroom 5 (using 5.2 currently). On occasion, but not always, when try to import from a cf card, LR does not refresh the import screen (ie it does not recognize that I have loaded a new card, and continues to show data from the previous card). I have checked when this is occuring, and the card reader is functioning properly, as I can see the card in windows explorer, and view the files in bridge. This has caused a rather serious issue for me in that Lightroom seems to have shown me that a card was empty, when it fact it was not. I then formatted and re-used the card, deleting some client photos in the process. I am using Windows 7 professional, lightroom 5.2, and san disk cf cards.