What's about these grey rectangles in Photos for Mac?
After importing my whole iPhoto library (some 20.000 pics) into 'Photos for Mac' I find some hundred grey rectangles in my Photos library (-> screenshot).
After a bit of investigation using the Info pane (-> screenshot) I find that none of these ‚photos’ has any information attached to them except for the pic’s number and date. However, searching for these data, turns out that there are none of these photos anywhere on my Mac - not in Photos app, nor in my previous iPhoto library, nor anywhere else.
Now I wonder what’s going on here? Where do these grey, non-existing 'photos' placeholders come from? Maybe some clever guy here can help me with a suggestion?
And can I safely delete them?
iMac, OS X Yosemite (10.10), Photos 1.0 for Mac