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Gray Preview Boxes After Import


New Member
Mar 29, 2016
Lightroom Experience
Lightroom Version
Hi LR gurus, I just installed LR 4.4 on a Mac El Capitan OS 10. Upon importing my first session, all the preview boxes are gray and show no images. They do however show in Bridge. I am importing from a PNY compact flash card reader plugged into a USB 4 port dock. Prior to this Mac, I was working on a PC with Windows 7 and always imported into LR4 this same way with no issues. All images are jpgs and there are no videos on this memory card. I have included a snapshot of the issue. Thanks for your help!

UPDATE....I closed LR then reopened and low and behold the previews populated/now show. I hope I don't have to close then open everytime I import?

UPDATE2...I imported a 2nd session and now all is well. Thumbnails show immediately.


Last edited:
Sep 29, 2007
Isle of Wight, UK
Lightroom Experience
Power User
Lightroom Version
Cloud Service
Thanks for the update Patty - and welcome to the forum!