Just a short post to report that on Win 8 64bit I had a small external drive attached.
On the drive were some docs backups in a folder, Windows Image files in a Windows made and named folder, and AX64 Time Machine images.
I've no idea why, but CCleaner wiped the Windows Images and the docs backups. It left the AX64 files alone.
My bad really as it wasn't until I pressed the 'clean' button that I saw ccleaner was also cleaning the external drive (F) as well as my C drive. I had no 'includes' or special settings and no Winapp2.ini.