I've been hashing this over at Cloudy Nights. Someone linked to a page that had
instructions to compile Stellarium.
Now I'm wondering:
The choice of Stellarium and Kstars was in the software app (bottom of
applications menu)that lets you choose what to install. (or uninstall) You just
click on what you want and the software app takes care of it. It shows
Stellarium as installed, the icon goes on the bar. Is it possible that the link
to Stellarium is wrong and you do have to compile it? (KStars installed through
that software app and is running with no hassle.)