Server 13 wont preview PDF containers
We recently updated our server from FileMaker Server 12 to 13. We have one database with a container field where users can upload and preview PDF files. After the upgrade, the user can no longer preview the PDF files and the Insert PDF option in the context menu is greyed out. In the preview window, users just see "Server Error. 404 - File or directory not found", however they can still right click and export the file (with contents intact).
I double checked and the field is still set as 'Interactive Content.'
I'm still running the 12 server as a backup and when users connect to that one they can preview the PDFs without issue. Users are using a mix of FileMaker Pro 12 and 13, with the same success/fail messages. It's got to be something on the server end but I don't know what.