Today, when I went to upload some PPT slides, to a new presentation, I received a Proclaim - No Disk Error with options to Cancel, Try again or Continue (see attached screen shot). It referenced drive D (a thumb drive) to which I had previously downloaded a presentation backup, but which was no longer associated with a physical device. Clicking Cancel kept producing the error message as did the Try again option. Clicking Continue kept producing the error message but after several clicks produced a file system dialog box from which I could select the correct path. It should have given me a dialog box as soon as I clicked Continue or canceled the upload operation upon clicking Cancel consistent with other application programs.
