Currently Being ModeratedNov 23, 2013 12:14 PM (in response to Khoré)
Would you confirm that youa re using Aperture 3.5.1? Did this occur after upgrading to Mavericks and 3.5.1? What camera model are these? I would check to make sure you are using the latest Camera RAW on Mavericks.
Currently Being ModeratedNov 23, 2013 1:51 PM (in response to firstlaunch)
Yes it' Aperture 3.5.1 and i've upgrad to Mavericks.
My camera is a SONY Alpha format AWR since 2006. I use Aperture since 2006 so without problèm
the updatings are made automatically
Currently Being ModeratedNov 24, 2013 4:08 AM (in response to Khoré)
Don't worry too much, you won't loose any images. These are only the previews which are not being shown correctly.
You might try some of these suggestions to fix the problems : https://www.apertureexpert.com/node/12513