Disconnected network drive no longer appears in DO

I can no longer access the memory card on my printer. It used to be available via my Z: drive. Then the Z: drive acquired a red X against the icon; now the Z: drive doesn't appear at all. I am not aware of doing anything to disconnect this drive. How do I get it back? I am using Directory Opus 11.

Is the drive visible anywhere else, e.g. in File Explorer?

No it isn't. What is visible regarding the printer, in both File Explorer and DO, is USBSTORAGE (\EPSON925AAA), mapped to my Y: drive, again bearing a red cross and in DO labelled as 'disconnected network drive'. The Z: drive has just disappeared. I can print from my printer without problems.

Maybe try reinstalling the drivers for the printer. If you see the same thing in Explorer then it's nothing to do with Opus specifically.