Lightroom 4.2 Update Available for Download
Adobe announced that the Lightroom 4.2 update is available for download. Lightroom should have prompted you to update, but if you ignored or cancelled the message simply go to the menu and choose Help–>Check for Updates.
You can also download the updates directly from Adobe’s website.
AJ, I have looked at your tutorial for missing photos in LR / question marks an all. I have that situation after moving pictures from Picasa to an external hard drive, not thinking I was affecting my LR pics. The difference with my problem is that my LR thumbnails have the question marks, but are BLANK / no preview pic inside. Also some folders are completely gone. Library still shows the me metadata though. Thanks for any help you can lend.