In another thread, I was pointed here: http://www.symantec.com/security_response/writeup.jsp?docid=2014-070111-2856-99 . It says that reg clean pro is Low Risk:
But in the report on my PC about Norton having removed it, it says it's High Risk:
If it's only a High Risk on the occasion because it's part of roboot64.exe, then forgive me for raising it - I'm a numpty. (Technical term. 
)
But if you feel the information shown is conflicting then over to you!