I have been running LR5 on a 3,1 macbook without issue for over a year, having imported thousands of images using USB (SD) reader in that time. About a month ago, an import failed - it got hung up and failed. Note, all items look normal - thumbnails showed up and the destination directories showed image counts for the anticipated import. The import seems to start normally, but then the status bar does not advance, and eventually i have to force quit the program.
I have tried to pull the images onto the HDD to import locally instead of the USB, and I have also created a new catalog. Neither have worked, and I have not seen anyone else with this issue for LR5... any help would be appreciated.