R help - Feb 2005 - Sweave and connections

I'm learning to use Sweave (it's really great!) and everything works
fine,
except that occasionally I get, after having sweaved many times, 
----------------------------------------------------------
 > Sweave("report.Snw")
Writing to file report.tex
Processing code chunks ...
 1 : term hide

Error:  chunk 1 
Error in file(file, encoding = encoding) : 
        All connections are in use
----------------------------------------------------------
This is no big problem, since it helps to close and reopen the R session,
but I wonder if I can avoid this, by "closing connections" or
something
similar. (I really have no idea of what is going on!)

This is

R : Version 2.1.0 Under development (unstable) (2005-01-19)

on Debian.

-- 
 G?ran Brostr?m                    tel: +46 90 786 5223
 Department of Statistics          fax: +46 90 786 6614
 Ume? University                   http://www.stat.umu.se/egna/gb/
 SE-90187 Ume?, Sweden             e-mail: gb at stat.umu.se

>>>>> On Mon, 7 Feb 2005 12:32:13 +0100,
>>>>> G?ran Brostr?m (GB) wrote:
  > I'm learning to use Sweave (it's really great!) and everything
works fine,
  > except that occasionally I get, after having sweaved many times, 
  > ----------------------------------------------------------
  >> Sweave("report.Snw")
  > Writing to file report.tex
  > Processing code chunks ...
  >  1 : term hide

  > Error:  chunk 1 
  > Error in file(file, encoding = encoding) : 
  >         All connections are in use
  > ----------------------------------------------------------
  > This is no big problem, since it helps to close and reopen the R session,
  > but I wonder if I can avoid this, by "closing connections" or
something
  > similar. (I really have no idea of what is going on!)

This should happen only if you have errors in the Sweave document:
then Sweave may have no chance to close the output file properly.

showConnections() lists all open connections, and you may guess what
closeAllConnections() does :-)

HTH,
Fritz

-- 
-------------------------------------------------------------------
                        Friedrich Leisch 
Institut f?r Statistik                     Tel: (+43 1) 58801 10715
Technische Universit?t Wien                Fax: (+43 1) 58801 10798
Wiedner Hauptstra?e 8-10/1071
A-1040 Wien, Austria             http://www.ci.tuwien.ac.at/~leisch