If you get this error message in the Adobe Content Viewer while trying to view a folio, it means that you're trying to open a new folio with and older viewer. This frequently happens between when a new set of tools is released and Apple approves the newest viewer version. If you install the new tools and create a folio, the current version of the Adobe Content Viewer isn't able to display the folio. You can do any of the following:
* If you have a Professional or Enterprise subscription to DPS, use the Viewer Builder to create a custom version of the Adobe Content Viewer. This custom version has Preview on Device enabled, unlike the store version.
* Wait for Apple to approve the newest viewer version. Use the Desktop Viewer to preview content for the time being.
* If you can't wait for the viewer to be approved, uninstall the tools and reinstall an older version of the DPS tools. See this article.