I've been doing lots of work in LR recently, creating lots of different collections from various years of photos. A strange thing just happened: most of the photos in one of the collections apparently just disappeared from my disk, as I'm getting the "original file could not be found" question mark on the thumbnails.
-The photos were just there, and I was making adjustments in the last couple days
-The photos are from different years, in different folders on my hd, and other photos in the respective folders are still there
-I've searched in spotlight and finder, and all of a sudden only those photos in this specific collection have seemingly disappeared from my disk
-Some are .jpgs, some are .CR2, some are .psd
-All the other collections appear to be fine
-I only have one hard drive in my computer right now, and my entire library is on it, so it's not like an external drive got disconnected
-The photos are not in the trash and I have not emptied my trash in over a week
-I'm not running Time Machine, nor have I ever
-I was possibly (could have been) exporting a gallery of this collection when I hit the cancel export button... previous to that, the photos were fine and on my disk, shortly after that, I get the little question mark in the upper right corner of the thumbnails
I always have backups of my photos, so I'm not extremely pissed, but I'd really like to know how this could possibly happen. Any ideas?