Error "Install a Printer" Photoshop CS4 - this message appears when I attempt to print documents that are 1-3 years old. The message reads: "Before you can perform printer-related tasks such as page setup or printing a document, you need to install a printer." These documents previously printed perfectly fine. When the message appears, the printer/set up options are greyed out, so, although the documents can be edited, they can no longer be printed. Any solutions?