hey, old topic I know, but I started having the same problem. however, after looking into the newer version of the client, I realized that I no longer get the popup that asks you if you would like to run the program (windows asking for permission) when you click it initially. the newer verison of ccleaner has an option that disables this and I think this might be causing the problem. go to ccleaner, click on the right side options---->advanced---->uncheck skip user account control warning. this worked for me. hope it helps!