I've just done some testing. Seems your /SCRIPTS/ directory is READ-ONLY.
Double-click the "User Script Name:" label to open the folder in Explorer to confirm your "save" isn't being saved at all.
Navigate one folder back, right-click onto the /SCRIPTS/ folder, and select Properties. Confirm the folder attribute is currently READ-ONLY (will have a check-box checked).
Uncheck the box, if you have system permission, and click APPLY and OK.
Hopefully that solves the issue.
I'll look at putting a proper error-message in Hurricane to notify the user of this.