[R] Problem with R interface termination

[Henrik Bengtsson]

For the completion of this thread; the below update was confirmed to
solve the problem.  /HB

On 2/27/07, Henrik Bengtsson <hb at stat.berkeley.edu> wrote:
> Hi,
>
> this is due to the R.utils library.  Interestingly, others reported
> this yesterday.  There are three different ways to get around the
> problem right now:  1) Exit R so it does not call .Last() by
> quit(runLast=FALSE),  2) load the R.utils package and then exit via
> quit() as usual, or 3) remove the faulty .Last() function by
> rm(.Last).  (Thus, you don't have kill the R process).
>
> Brief explanation: If you load the R.utils package, it will modify or
> create .Last() so that  finalizeSession() (defined in R.utils) is
> called, which in turn calls so called registered hook functions
> allowing optional code to be evaluated "whenever" R exists, cf.
> http://tolstoy.newcastle.edu.au/R/devel/05/06/1206.html.  So, if you
> exit R and save the session, this .Last() function will be saved to
> your .RData file.  If you then start a new R session and load the
> saved .RData, that modified .Last() function will also be loaded.
> However, if you now try to exit R again, .Last() will be called which
> in turn calls finalizeSession() which is undefined since R.utils is
> not loaded and you will get the error that you reported.
>
> I'm testing out an updated version of R.utils (v 0.8.6), which will
> not cause this problem in the first place, and will fix the problem in
> "faulty" .RData.  I will put in on CRAN as soon as I know it has been
> tested thoroughly.  In the meanwhile, you can install it by:
>
> source("http://www.braju.com/R/hbLite.R")
> hbLite("R.utils")
>
> To fix an old faulty .RData file, start R in the same directory, then
> load the updated R.utils (which will replace that faulty .Last() with
> a better one), and then save the session again when you exit R.  When
> you do this you will see "Warning message: 'package:R.utils' may not
> be available when loading", which is ok.  That should fix your
> problems.
>
> Let me know if it works
>
> Henrik (author of R.utils)
>
> On 2/27/07, Bhanu Kalyan.K <kalyansikha at yahoo.com> wrote:
> > Dear Sir,
> >
> > The R interface that i am currently using is R 2.4.1( in Win XP). I am not able to terminate the program by giving the q() command. Each time I pass this command,
> >
> > > q()
> > Error in .Last() : could not find function "finalizeSession"
> >
> > this error creeps in and it neither allows me to save my workspace nor come out of R. Therefore, whenever this happens, I am forced to end the Rgui.exe process from the task manager.
> > Kindly help me fix this problem.
> >
> > Regards,
> >
> > Bhanu Kalyan K
> >
> >
> > Bhanu Kalyan K
> > B.Tech Final Year, CSE
> >
> > Tel: +91-9885238228
> >
> > Alternate E-Mail:
> > reach4kalyan at gmail.com
> >
> >
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