thanks
What operating system are you running?
If you are using a 64bit version of Windows can you try renaming ccleaner64.exe to something else.
Some people report that works for them.
http://forum.piriform.com/index.php?showtopic=43460&do=findComment&comment=261673
and
and just to round out your already extensive testing, try to run CC with the PC in Safe Mode.
Windows 8.1 64 bits
I changed the 64-bit file name and actually returned to work. thx so much.
the funny thing was that the first record of error was something ccleaner. pity that other software were not able to solve. I will try to return to the default name as I read the link on posting the comment you recommended.
SOLVED
Glad to hear it's all working for you again wps8633
What is the problem behind this? Why do we need to rename the file?
When i rename the 64.exe, it works. I run the cleaner, and when i rename it back, it doesn't work again.
Only a renamed file works at the moment. Some registry error?