Simply going from my usual profile "EQ6-R@fedberry " to "Simulators" then try to connect.
Kstars crashes. I kill every INDI server/drivers on the PI then start kstars again and connect (Simulators) again. And it works...
Same thing if you try to change again your profile. Easy to reproduce.
FYI, Jasem made a change a month or two ago, that required an upgrade of both Indi and KStars. If you're using an old Indi with a new KStars, it would a crash just like you observed. Since it seems you are running from compiled recent software, please make sure you also have a recent indiserver.
This specific error is indeed related to INDI... so after you install INDI, are you sure when you compile KStars, it is getting linked to most recently indiclient library ? Please double check nothing else is on your system that is getting linked instead. Run ldd on KStars and see which indiclient library it is linked to.