Jim,
It goes through the checking process and when finished turns the lower right label to Done. Pressing the Done button closes the dialog and returns to the installation screen but the Install VFP is still disabled and the only thing available is the Prerequsites.
I have the anti-virus and firewall software turned off.
Mark
Software engineers are trained to read and understand code; they are not trained in mind reading. Document the purpose not just the functionality.