Win7 Pro x64 - After installing MediaInfo 17.10 (https://mediaarea.net/en/MediaInfo) CCleaner would crash when trying to run. Uninstalled CCleaner and tried to re-install... installer crashed. Uninstalled MediaInfo and was able to re-install CCleaner 5.36 and it runs fine now. Hope this helps others
I haven't had any clashes or incompatibilities between CCleaner 5.36 (Portable Version) and the lite version of MediaInfo called MediaInfo Lite.