Adobe Presenter does not co-exist. It means if you have Presenter 8 installed, it wont install Presenter 9.
Hence kindly uninstall Presenter 8 and then install Presenter 9.
Let us know if you need any more information.
Adobe Presenter Engg Team
I suppose the wording of the error message is not clear.
I HAD version 7 previously installed and I HAVE uninstalled it on Windows 7 Pro. It's gone - there's no sign of it in the Registry, the disk, and it's no longer listed in the Control Panel's list of software.
And YET I get that same error message when I attempt to install Presenter 9.
So, what's occurring?