With AstroSynthesis, I seem to be experiencing some bugs.
Red giants and blue giants do not have planetary systems (this may just be the algorithm).
When I make a nebula system, it just displays as a normal star without planets.
All the planets that are generated are unpopulated.
(Oh by the way, is there any way to easily "see" the allegiances you've made and which areas they control, like giving each world a flag? There was a mention of that on the website, but I can't seem to find the right function.