Several times in the past I have found duplicate keys in the registry. They are differentiated by a .1 extension. In one case they came about after a dual boot Windows install. I manually deleted the second copy of Windows and removed its entry from the boot menu. I suspect duplicate keys also can appear when an app is manually deleted.
The CCleaner Registry Cleaner does not recognize these duplicate keys. It would be nice if it could remove them when it cannot find the corresponding folder.
Nick Geti
