Viewing interactive PDF files on a Mac is only half way there. You can view a PDF file but none of the interactive controls appear. A year ago I traced a problem to the SSL certificate. Now it is back again. Preview is set as the default. No Adobe product is installed. All Internet plug ins have been found and deleted. I installed Adobe Reader and then deleted it and reset the default to Preview and deleted the plugins again. I reinstalled Filemaker 16.0.2. I double checked the SSL certificate and tried it on a local Mac. I am not sure but this appears to have started up again with the installation of High Sierra. Is there some definitive way to make this work? I even created a new database with one field. Inserted a PDF file. Again I can only view not use the interactive controls. Help???