Firstly this should be in the troubleshooting forum under the troubleshooting thread.
I don't know how to change the home world in-game, However I do know how to change it in config. Go to universe under the configs folder. Look for the text at the bottom of the post in the file, add the name of the object you wish to add/change.
That's my problem, i've already looked in the config file, everything is as it should be...
// our home address (switched with Shift-h)
HomeGalaxy "Milky Way"
//HomeCluster // we have no home star cluster :)
It's exactly like this, i've already tried to change the "HomePlanet" Entry, brought me nothing... weird.