Version 15 has just been made available.
relspace14-2 is still available here.
Relspace 15 has more accurate moon and planet positions. The menus have been reorganized and expanded. There are new input formats including a new flexible format for stars and some input formats for orbit perturbations. There is an option to display constellation lines and borders as well as a way of using the search mode to find the constellations. There are improvements to the black hole optics including the gravitational blueshift effect. There are some examples added to the data of the new L and T spectral type stars and more extra solar planets. There are two new demo script files for presentations on the planets and the basics of astronomy (planets.dmo and astro.dmo).
Known bugs: The orbital period is not displaying properly. The program will crash if more than one input format of the type P is used. The orbit algorithm does not work for planets, moons or moons of planets with advanced orbits from using input types P: and n:. Fix these bugs by downloading relspace.exe and replacing this one file. This version also includes some changes in the display of galaxy cluster labels. It includes some expansion of abilities of g: and O: input types for more complex systems of orbits. The techniques for estimating stellar parameters has been revamped and the dwarf spectral types DA0 through DQ0 have been added. Download bodies.txt and replace this file to include examples of the complex orbits of nearby star stystems.