We are experiencing an issue where InDesign v21 will crash while we are using HP SmartStream Designer. This occurs when we start creating an imposed job, and will fail at different times with our templates. We notice this occurs predominately with the 6x9 postcard template.

This happens often enough to where we are hesitant to upgrade to the latest version of InDesign, as we are not having this issue with v19. We have tried remaking the template file, which did not fix the issue. Is this a known bug? What steps would be best for us to try next?