ChemDraw Chem3D: I just got the 8.0 Chem3D Plugin installed, but now none of my 3D structures show up in my web browser

I just got the 8.0 Chem3D Plugin installed, but now none of my 3D structures show up in my web browser.

3D files embedded for use with older Chem3D Plugins can still be opened in the latest Chem3D Plugin, but the embed code will need to be updated first. For details, please see the Plugin Documentation section of our Support site.