Get it here or via 'Help > Check for Updates' in 9.0.A1+.
Please ensure you have 'Auto-Save' and 'Backups' enabled in the Preferences
What's changed from 9.0.B5:
- Added 'Preference' to control 'Checkbox Styling' of incomplete parent tasks with completed subtasks
- Fixed 'Paste as Reference' with tasklist paths containing accented characters
- Fixed 'Translation' of 'Attribute Editor > Priority' field droplist
- Fixed preservation of 'Time Units' when 'HMS' formatting