What does the error "Error writing program data to disk!" mean?

This message means that Lab could not write application data to disk.

Photogize Lab writes to data files, with the extension .nod, to the Lab application folder on exit and at various other times. Possible reasons for this error:

- You are out of, or nearly out of, disk space on the drive where Photogize Lab is installed. The remedy for this is to clean up the drive on which Lab is installed.

- The .nod files are marked as read-only. The remedy for this is to select the .nod files in Windows Explorer, right click on the selected batch, select properties, and uncheck the read-only attribute