After the most recent upgrade when I try to develop a file previously imported into the catalog I get 'The folder could not be found'. However when I try to re-import the file I get a notification that the file already exists and the import options are grayed out. The location of the file hasn't changed on the drive, but it is possible that the drive got a different drive letter since I did the initial import 6 months ago. I'm in purgatory as I really don't want to go through the exercise of renaming files just to work on developing them. Thoughts or assistance appreciated.