The exact message is:
Previous Version Found
"Please uninstall the previous version of Fences AND REBOOT before proceeding with the Fences 2 installation. The Install will now exit." (The capitalized words were in the error message and not me shouting.)
Analysis of Windows Event Viewer yielded nothing, and I could find nothing else on my computer, machine- or software-wise, that is causing this disagreeable situation.
I'm also mystified as to why I thought it was a certificate problem. (Painkillers and Ativan? )
When you asked the same question a few weeks ago, what answer(s) did you get?