Aperture -- Black previews but mb. data is present
I still use Aperture [am on Mojave] and one of my libraries is the result of importing smaller ones into it == images etc. are just fine but some of the images in what is called "recovered project" [don't know where from] has about 90% of the previews showing in black. I have rebuilt the library and repaired the database, they're still there. Before I toss them, is there anything else to do?? Thanks.
iMac 27″ 5K, macOS 10.14