This can happen when the association between QuarkXPress and its projects is somehow lost in the Registry. You can fix this problem by following these steps:
- Open My Computer.
- Click on Tools>>Folder Options.
- Click on File Types.
- Highlight the QXP file type.
- Click on Advanced.
- Click on Change Icon.
- Browse for QuarkXPress.exe under Program Files and choose QuarkXPress.exe. You will see all the icons of QuarkXPress.
- Choose the QuarkXPress project icon.
- Click OK.