[Running CCleaner Pro Broke My Brave and Firefox Browsers]

After signing up for CClean Pro and activating, I ran a number of programs: 
Healthcheck, Performance Optimizer, Custom Clean, Driver Updater, and Registry. 
I have been using the free CCleaner application for a number of years. 
This time with CCleaner Pro, however, I seem to have damaged two of my four browsers: 
Brave and Firefox.  If I leave the browser temporarily to do another task, when I return, 
the browser has become unresponsive.  Sometimes the tabs that are already open will work, 
sometimes not.  New tabs typically do not work.  Sometimes they'll say "Crash" if I hover 
the cursor;  mostly they refuse to accept a new URL by simply blanking it out. Do you 
suppose Performance Optimization caused this by forcing a necessary background process 
to sleep????? ... or what?  I stopped all Brave processes, uninstalled it, and then 
went looking for any leftover folders and files. I deleted them all until there was no 
trace.  Also ran the register cleanup.  Then I reinstalled Brave.  Same thing.  Still 
doesn't work. I have to kill it and restart all the tabs I was working on.

[Is There A CCleaner 3.535 Yet?]

Today (9/20/17) I received an update pop-up, allegedly from CCleaner that a new, important update was available.  When I said go ahead, an update proceeded immediately.  I got a message that this was an "unusual" download and might not be safe.  Uninstalled and erased everything followed by a security scan.  Nothing found.  If I get the pop-up again, for CCleaner 3.535, I post the image.

 

TLin Maine

 

*** Re-installed CCleaner 5.34 and immediately got the "important update" notice.  Screen capture attached.