If not, I suggest you open a technical support call at 1-866-348-5863 or through our website. That will require someone to remote in at your site and troubleshoot some more.
The ‘Circular/multiple reference encountered when processing “element” property (Core_602)’ warning messageS are shown in the Messages pane after opening the Print, Proof Print or Output Creation dialog in PlanetPress Connect version 2020.2.1 or older. As far as I know, these warning messages won’t be shown in the Messages pane after opening one of these dialogs in the next release of PlanetPress Connect.