I'm working on processing some old images. When I go to the Lightroom Photo > Edit In > PSCS3 command (like I do for all my editing between LR and PSCS3) I get this error message: Lightroom was unable to prepare the selected file at /Volumes/family tres/rachel collection/rachel's twos/july05/july12-wading pool/IMG_4415.CR2 for editing. It will not be opened. Does anyone know what might be causing this and how I might correct it? I've optimized the catalog. I've tested the file and it does open so I know it's not corrupt. I wish to use the Edit In command to keep the link between the image and LR active for archiving purposes. Thanks for your help. Lea your kids . my camera . we'll click www.leamurphy.com