You've installed the wrong SDK.
- For BlackBerry 6 and 7, use: https://developer.blackberry.com/bbos/html5/downloads/?os=mac#smartphones
- For BlackBerry 10, use: https://developer.blackberry.com/html5/downloads/?os=mac#blackberry10
Make sure that the WEBWORKS_HOME variable path points to that of the BlackBerry 10 SDK.