Heaven and Earth 1.4 is the last production release of the "1" series, which is now unsupported.
It was highly buggy. It could crash in the middle of the lengthy Sector Generation procedure, any change to a world required the program to re-excute a 1-4 minute "world generation procedure", and many other problems.
Stuart Ferris is currently engaged with the creation of Heaven and Earth 2.0. It's now in beta production. It will consist of three parts. A Galaxy module (for the handling and placement of Sectors, Charted Space style), a Sector module (for the handling of world placement in a Sector), and a System Module (not yet finished). The Galaxy and Sector modules are released in beta, and are available at the Mailing List website on Yahoo (you must be admitted by the the List Owner, Stuart Ferris; be patient, admission time is variable).
Currently, development is on hold due to an attack of real life.