Here is v1.20 of Writing Shed for testing the open file issue
You can download it by clicking on the Download Now button at the bottom of this page. This will place a copy of the App in your Downloads folder.
- Drag the app to the desktop (not Applications otherwise you’ll overwrite the released version).
- Launch the app. It will display a warning dialog saying it’s from an unknown developer.
- Control-click the open button in the warning dialog. The app should launch.