From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Charles C. Berry" <ccberry@ucsd.edu>
Subject: Re: Using tramp to run R source code blocks on remote server
Date: Thu, 21 Apr 2016 09:48:14 -0700
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To: Vikas Rawal <vikaslists@agrarianresearch.org>
Cc: org-mode mailing list <emacs-orgmode@gnu.org>

On Thu, 21 Apr 2016, Vikas Rawal wrote:

> I am trying to run R source code blocks on a remote server (defined in my ~/.ssh/config as cesp).
>
> I am facing several problems.
>
> 1.  The following sample block, when used with ":results value" does not give any results.
>
> #+NAME: level1
> #+begin_src R :results value :exports results :colnames yes :hline yes :session cesp :dir /cesp:/home/vikas/
> c(1:5)
> #+end_src
>
> I get the following message:
>
> tramp-flush-directory-property: Wrong type argument: arrayp, nil
>

I think this is an issue with having different version of ESS on your 
local and remote systems.

In particular, newer and older versions of `.ess.eval' have different 
arguments. You can check this by running `args(.ess.eval)' in the session 
of your remote server and in a session on your local system.

In any case, I'd suggest asking on ess-help@r-project.org for help in 
fixing this.

HTH,

Chuck