Recently "improved" to 5.6, now I can't import files. I'm a computer novice so this is frustrating. The previous version worked wonderfully. When I try to import the thumbnails don't appear and the following is displayed instead - "Preview unavailable for this file." I try to execute the import command anyways and a pop-up box appears indicating that "some import operations were not performed" and in fact NONE of the files imported. I've segregated the .jpg and .nef files and tried to import them separately and still NO GO! Hoping for some help, thanks in advance!!