Is a Preface geometry missing in your ExpertCAM database?
Please open the Update Center and search for the desired geometry under the "Not Installed" section.
Select the desired geometry and proceed with the installation.
After the installation, please restart ExpertCAM. The newly installed geometry should now be available in your database.
If you require further assistance, please don't hesitate to contact us.
Kind regards
Your Dental Concept Systems Team
Attached is also a short video for your reference.