In there, I made the crashes that occurred so far more graceful, displaying error messages and recovery options.
As it happens, the kstars logger seems not to be configured not to display critical messages and the crash handler is not (yet) set-up.
That's why you're not getting useful error messages.
Thanks Valentin,
Tried it with the same crash. I sent you my kstars log possibly with more info. Take heart I'd bet I'm doing something wrong and not you.