I use an iMac, Lion OS and Lightroom3. I store all my photo files (approx. 50,000) on a Drobo RAID system. Apple replaced my iMac HD. I connected an external 750GB G-Drive for Time Machine back-up. Since there was not sufficient memory on the G-Drive, I set the Time Maching to ignore my Picures. After moving the pictures over to the Drobo and deleting the Pictures on the iMac HD, my Lightroom files went missing.
I used the Locate File option to find one of the missing files. Before I initiated this, the folder in the library showed 640 files. After locating the missing file, the folder shows 0 files. The missing file is now showing and available.
HELP PLEASE