There are likely some registry entries still lingering. TAC has some scripts they can provide to help remove those, so please open a case. Thanks, Matt

Are you using the same hostname? Have you looked at the install log to see if there are any indications in the logs of what is not going as expected? 

Without more details I can't say for certain why the endpoint isn't displaying the Cisco Security Risk Score. We may need to investigate the logs on the endpoint to determine communication issues or installation issues. I suggest opening a TAC case s...