NB for installation on newer Macintosh and Windows operating systems you may need to bypass warnings about software from an unverified developer.
To bypass unsigned warnings on Mac OS X
To bypass GateKeeper checks, simply right-click on the installer icon and choose "open", or hold down the control key while clicking the icon and choose "open".
To bypass unsigned warnings on Windows
To bypass Authenticode checks, choose the "Actions" options and then click on 'More Options' and choose "Run anyway" from the second dialog.