Would you be kind enough to list the problems that are likely when serving a file created with FileMaker 15 on FileMaker Server 14?
The solution I'm working on will make use of layout features (e.g. button bars), external (secure) container storage, and 'Perform Script on Server' scripting. I can't quickly recall the differences and issues with 'mixed' hosting, and don't have direct control over the (shared) FM Server 14 machine.
-- Drew Tenenholz