I just had the dreaded phone call from a photographer friend: "My Lightroom Catalog is corrupted and I cannot open my main or backup catalogs". This is a thing that I can't fix over the phone - It's time for Adobe Help. They are skilled photographers that do amazing work, but did not know about Saving Metadata to File. This step saves all the work done in Lightroom (except Collections, Virtual Copies, and Flags) into the actual photo file - DNG, RAW Sidecar, TIFF or JPEG. T