DOS error code 16979 indicates that the K:DATAD.nv file is backup file that was created using Backup books from the NewViews shell or the datad.nv file is zero bytes.

Use Restore Books from the NewViews shell to uncompress the datad.nv file to it’s original size.

If the datad.nv file is zero then reloading a backup is the only solution.

Regards to all,