Maybe your database is corrupted? If you stop the program, open up a terminal and type: mv ~/.config/darktable ~/.config/darktable.old
then type: /Applications/darktable.app/Contents/MacOS/darktable maybe it works again? If not, let us know what error message you see in the terminal. ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org