Product and version (FileMaker Pro Advanced 15)
OS and version (macOS Sierra 10.12)
Browser and version
Hardware (MacBook Pro 17-inch, early 2011)
Internal Error on every use of Web Viewer Setup
How to replicate
1. Start a new solution - Insert Web Viewer. Internal Error!
2. Existing solution - Update Web Viewer. Internal Error!
Web Viewer displays web pages on existing solutions. However go to Edit Layout and user Format ... Web Viewer Setup ... and it crashes every time.
Clean install of macOS Sierra
Clean install of Filemaker Pro 15 Advanced
Workaround (if any)
None - Internal Error crash on every Web Viewer Setup