Crashing with the latests versions in CCleaner Bug Reporting Posted April 25, 2012 MrT, many thanks. It was exactly like you've said. I've installed CCleaner 3.18 few moments before you've posted. It crashed. I was about to uninstall it and read your post. Change the language and it worked! Indeed I have Firefox and Chrome processes running in background and set CCleaner to don't close them.