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I have an org file with R code in it. When I attempt to export to html or pdf I get an error:

For example if my file was:

#+begin_src R :exports code
square <- function(x) 
{
 x * x
}

square(1:10)
#+end_src 

I type: C-c C-e h o the mini buffer says: Symbol’s value as variable is void: backend

  • And if you change the language to something other then R it works? – Prgrm.celeritas Mar 19 at 21:34
  • yes emacs lisp works for example – user27815 Mar 19 at 21:59
  • What major mode are you using for R? – Prgrm.celeritas Mar 19 at 22:50
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I already had this line in my .emacs but I added another copy at the end of the .emacs file and it solved the problem. So maybe there is an ordering constraint for this to work correctly.

(require 'ess-site)

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