Hi Ray,
To bring back the application into working condition, please follow the below steps:
1. Download the PAR file which is in working condition (preferrably from PROD Portal).
2. Login to your Quality Portal with Administrator Access.
3. Go to System Administration -> Support -> Portal Runtime -> Administration Console
4. Browse to the location of the PAR file and click 'Upload'
5. You will then get a message that 'Application successfully stored in the PCD'.
In case you still face any issue, please clear the caches and your browser cookies and then try again.
BR,
Anurag