The file could not be found
It seems that Lightroom 5.7 running on a new Imac can not find my images drive. All the files show in the library, but the notice "the file could not be found" appears on all the images in Develop mode. All folders have a ?. When I choose "find missing folder and choose it, the same notice "the file can not be found" appears again in Develop mode. When choosing to import the folders in the drive, or the drive itself I am notified that those files already exist in the catalogue.
Any advice?
