aperture not opening
error on opening database for aperture library
iMac
error on opening database for aperture library
iMac
Since you have not given us any information to use to help you maybe you should download and install EtreCheck from http://www.etresoft.com/etrecheck
Run it and post the report here.
While your at it also provide the version of Aperture you are running.
aperture not opening