I have one user that has experienced repeated crashes when he goes to a layout with an interactive container with a pdf. What has been tried so far: Used a different computer, clean install of operating system, reinstall of FileMaker Pro, upgraded to FileMaker Pro 16, deletion and reinstall of Adobe Reader several times, I have logged in as that user from our office so an entirely different LAN and ISP was used, and the problem was duplicated. This has me stumped. While occasionally other users have had problems with this layout, deletion of the pdf reader and reinstallation has fixed the problem with all other users. Only this user has this intractable problem. What am I missing? He is using FM 16 on a Mac running Sierra with 16 GB of RAM with plenty of hard disk space.