The source of this message depends on the file format of your current script.
QuarkXPress
The file name of the Quark File property of the current Quark Pages script line, either has no extension, or has an extension that is not recognizable by QuarkXPress (ie. it is not .qxp for Quark 8-2025).
This error usually comes from using a Macintosh file directly.
InDesign
The file name of the InDesign File property of the current InDesign Pages script line, either has no extension, or has an extension that is not recognizable/usable by InDesign.
This error usually comes from using a Macintosh file directly or the use of an IDML file which cannot be used directly and must be opened and saved as an INDD file.
Solution
It will not be possible to preview or execute the current script until this error is fixed.
If your selected file has no extension, then you can first try to add the extension .qxp for QuarkXPress documents versions 8-2025, or the .indd extension for InDesign documents of version 2020-2025.
Other options are:
•Select a QuarkXPress or InDesign File: Automatically opens the QuarkXPress or InDesign File property editor.
•Delete Script Line: Deletes the current QuarkXPress or InDesign Pages script line.
Topic 178225, last updated on 28-Apr-2022