CCleaner is not removing cache on Opera even though I have that checked.
I have split your post into its own thread as it deals with Opera rather than the OP's issue with Firefox.
The Opera cache can be cleaned using CCleaner for non-standard profile-data location as following procedures:
(1)Make sure your Opera items were listed in CCleaner>>Application>>Opera, if it did not in the list, you can clean
internet cache only but Cookies...etc. can not be detected.
(2)Add one custom location in the ccleaner.ini ,which located in the installation directory of CCleaner
CustomLocation1=CHROME|D:\SlimjetUserData =>if you have already Slimjet installed.
CustomLocation2=OPERA|D:\OperaProfile =>add this statement(if your "Opera>> profie>> data" all files which
located in the D:\OperaProfile dedicated directory)
(3)Please check and add the statement of in ccleaner.ini ,which did not and if you want to clean Cookies in the mean time
(App)Opera - Cookies=True