OK, after this database update I was able to slew the dummy RTS2 telescope.
However, the crash-on-exit persists. I have only Telescope plugin active. When I exit immediately after program start, all is OK. When I press the telescope button and see the panel "No telescopes connected", I press "configure", I see the unconnected RTS2 and an unconnected Stellarium Dummy telescope. When I quit Stellarium at this point, already here I have a crash. So it does not even require connection, only being (partially?) loaded. Maybe some uninitialized pointer?
OK, after this database update I was able to slew the dummy RTS2 telescope.
However, the crash-on-exit persists. I have only Telescope plugin active. When I exit immediately after program start, all is OK. When I press the telescope button and see the panel "No telescopes connected", I press "configure", I see the unconnected RTS2 and an unconnected Stellarium Dummy telescope. When I quit Stellarium at this point, already here I have a crash. So it does not even require connection, only being (partially?) loaded. Maybe some uninitialized pointer?