There are multiple programs that can override Final Draft as the default program for .FDX files and cause this error. The ones we're aware of are:
- Elite Prompter
- Previs Pro
- ScriptE
- Scripts Pro
- Scriptigo / Scriptigo Pro
- Scriptly
- Shot Lister
- Table Read
- Writer Solo
At this time, the only solution we know of is to uninstall that program.
12039
https://fd.support/3NkBfh6