This has happened all of the last three times I'm importing to Lightroom from an SD card that came out of my Nikon D7000. I'll get about 175 photos through an import from a shoot that day. Might have 800-1000 jpegs to import. At around 175 the whole process just hangs. I can still use other programs but LR is hanging. I have to end the task (successful) but quitting LR is impossible without a Force Quit. I've tried different SD cards, that's not the issue. Any thoughts?