R code blocks and 'could not find function ".ess.eval"'

R code blocks and 'could not find function ".ess.eval"'

[William Denton]

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This problem was reported last month and then again earlier this month, for 
example here:

https://lists.gnu.org/archive/html/emacs-orgmode/2014-10/msg00178.html

I'm running Emacs 25.0.50.2, Org 8.2.10 and ESS 14.1x.  I'm getting a lot of

    Error: could not find function ".ess.eval"

errors when evaluating R code blocks, even simple ones like this:

   #+BEGIN_SRC R :session :exports results
   1 + 1
   #+END_SRC

I have a more complicated Org file with a bunch of R in it that I want to export 
to a PDF, but I get this:

    Args out of range: #<killed buffer>, 0 ,1

I've been trying to debug it and seemed to narrow down a minimal example to 
whether or not a simple block had ":exports results" in it, but yesterday when 
working on this some process would go haywire and my machine would slow down 
and then freeze!  I had to force a reboot.  I've never had Emacs do that before.

I see that a patch was introduced for ob-R.el that fixes the 'could not find 
function ".ess.eval"' problem---will that be pushed into the main release soon?

And has anyone else been running into problems like this recently?  From what I 
saw in the archives it looks like it went away for most people.

Bill
-- 
William Denton ↔  Toronto, Canada ↔  https://www.miskatonic.org/

Re: R code blocks and 'could not find function ".ess.eval"'

[Charles C. Berry]

On Tue, 28 Oct 2014, William Denton wrote:

> This problem was reported last month and then again earlier this month, for 
> example here:
>
> https://lists.gnu.org/archive/html/emacs-orgmode/2014-10/msg00178.html
>
> I'm running Emacs 25.0.50.2, Org 8.2.10 and ESS 14.1x.  I'm getting a lot of
...............................XXXXXXXXXX

That version of org does not have the patches mentioned in the threads you 
reference. Current `master' does.

>
>   Error: could not find function ".ess.eval"
>
> errors when evaluating R code blocks, even simple ones like this:
>
>  #+BEGIN_SRC R :session :exports results
>  1 + 1
>  #+END_SRC
>

Either update to `master' or start the R session interactively by `M-x R' 
before executing R commands in babel until such time as the version of 
orgmode you use catches up to the recent changes.

HTH,

Chuck