This message occurs if Q++Studio cannot recognize the file version of the QuarkXPress that you are trying to use as part of a DiaryGridLine.
➢Usually this happens if the QuarkXPress file, mentioned in this message, was last saved on a Macintosh.
Solution
Use the Windows version of QuarkXPress to open that file and save it. It will thus be saved as a Windows file and the present message will disappear.
Topic 178720, last updated on 22-Mar-2021