I purchased CCleaner Pro and downloaded ccleaner558_pro.exe. When I ran the program it installs version 5.44.6577. I try to upgrade but nothing happens. With CCleaner running, I click on the "check for updates" link on the bottom right side. It tells me I have 5.44.6577 installed and there is a new version 5.58.7209 available. I click on the YES button. A pop up showing a progress bar appears. The progress bar moves across until it reaches 100%. But then nothing happens. CCleaner remains at version 5.44.657. And now when I click on the ccleaner558_pro.exe file I get an error screen indicating there is an error opening file for writing: C:\Program Files\CCleaner\CCleaner64.exe. I have a 64 bit computer with 64 bit Windows 10. I am the administrator. When I right mouse click on the ccleaner558_pro.exe file and select "run as administrator" I get the same error. Just exactly how do I install version 5.58.7209? After all, that's the version I paid for.