Hi, I tried but don't know how to. I did this: 1. open a text file and apply major mode: "ESS[S] modedefined in 'ess.mode.el' , according to C-h m 2. Start R from that process (need to have R installed, a statistics program) 3. In the inferior R process, try running hippie-expand , that's how I got the error. I have been asking in #emacs @freenonde on how to load ess-mode from -Q, ill tell you when i know On Mon, May 19, 2014 at 6:26 PM, Glenn Morris wrote: > > Thanks for the report, but please give us some (any!) details. > Can you give a recipe starting from emacs -Q that shows how to > reproduce the problem? > > Can you do: > M-x toggle-debug-no-error > repeat the problem, and send the backtrace? > > Buried in the automated part of your report, I see the problem was: > > he-init-string: Wrong type argument: integer-or-marker-p, nil > -- mvh Torbjørn Lindahl