I just noticed that a setup of a programm adds entries to the %PATH%-Variable. For that, it creates another Variable, let's say %MYPRODUCT%.
After deinstallation of the Product, the Entry in the %PATH%-Variable still remains. e.g.: [...]C:\Windows\System;%MYPRODUCT%\APath\;[...]
The declaration of %MYPRODUCT% itself is removed. So after all there is a invalid Entry in the PATH.
It would be nice if CCleaner could remove "%MYPRODUCT%\APath\;" out of the PATH Variable.
Greets
Roman