Here is the solution if you downloaded and opened this application so as to
have the installer icon on the desktop but you are unable to get the installation running. A double click on the icon merely resulted in a fast appear & disappear of the bouncing icon in the dock. I discovered that the solution is to open the download with Stuffit Expander 6.0......NOT Zipit, NOT Stuffit Expander 7.0 or 7.0.3. Only by opening with Stuffit Expander 6.0 did a "workable" installer icon appear on the desktop. The other installers were duds. Anybody know why?