I've come across this on 3 different machines so far (XP, 7, 7-64); when using the latest CCleaner and Winapp2.ini, an error started appearing in Google Chrome's version 33 dev. line (tried with three various versions of the 33.xxx dev line of releases) - the well-known dreaded Chrome message about preferences being corrupt or invalid. It results in Chrome recreating the preferences, resetting everything, deleting extensions and so on... basically, the whole browser gets broken and reset to the default, destroying the entire personalized user setup.
After experimenting on all 3 systems, I've found out the reason: it's marking the "Internet History" option in the Applications/Chrome tab of CCleaner. Specifically, when this option is marked, CCleaner will not only delete various history files such as Network Prediction, etc., but - for some strange reason - it seems to cut out a significant portion of Chrome's "Preferences" file. My "Preferences", about 250K in size, got stripped by about 30K.
So, it really does make the file corrupt. When Chrome is run again after CCleaner cuts the "Preferences", it flags this truncated file as damaged, and deletes it.
