SYMPTOM:
When editing Security filters in Developer, the error message "Error encountered while generating text for this qualification" is displayed in FIlter definition panel if these objects are built using Command Manager in Strategy 10.3 - 10.6, as shown below:

STEPS TO REPROUCE:
Follow steps below to reproduce the issue in Strategy Tutorial project:
1. Launch Command Manager and connect to Strategy Analytics Modules Project source.
2. Execute the following command:
Execute the script CREATE SECURITY FILTER "TEST2" FOLDER "\Project Objects\MD Security Filters" IN PROJECT "Strategy Tutorial" EXPRESSION '[Region]@ID=1 AND (([Country]@ID BETWEEN 1 AND 3) OR ([Country]@ID BETWEEN 5 AND 7))';
3. Launch Strategy Developer and search for object “TEST2”.
4. Edit it and note the error message "Error encountered while generating text for this qualification" in Filter definition.
ACTION:
The issue has been fixed in Strategy 10.7