Try changing your repository from Melpa to Melpa-stable: (add-to-list 'package-archives '("melpa-stable" . "https://stable.melpa.org/packages/") t)
I had a similar problem after a recent update of ESS in MELPA, but after I deleted ESS and reinstalled from melpa-stable, everything worked just fine. -- Woody Setzer [[alternative HTML version deleted]] ______________________________________________ ESS-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/ess-help