This InDesign design-time message means that the list of PDF export presets has not yet been initialized for the version of InDesign that you are using.
This message will occur once, the first time you launch Q++Studio, after installing a new version of InDesign.
Solution
Select the Initialize List of PDF Presets menu item to initialize the list of PDF export presets.
Topic 185945, last updated on 15-Jun-2021