Did you change any settings? If not, that sounds most likely like your configuration file ~/Library/Preferences/kstarsrc was lost somehow. Basically, you just need to go in to the KStars Preferences and go into INDI and XPlanet and make sure all the "use internal" checkboxes to the left of the INDIServer etc are checked. You will also need to do this in the astrometry configuration as well. Plus any settings that you had configured will need to be reset.