Errors with installing SNA packages - eclipse

Question

I've been trying to install SNA packages but i always get the next errors,
> install.packages("sna")
Installing package(s) into ‘/home/rvaca/R/i486-pc-linux-gnu-library/2.14’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
Loading Tcl/Tk interface ... done
trying URL 'http://cran.cnr.Berkeley.edu/src/contrib/sna_2.2-0.tar.gz'
Content type 'application/x-gzip' length 273329 bytes (266 Kb)
opened URL
==================================================
downloaded 266 Kb
The downloaded packages are in
‘/tmp/Rtmp7iF3Qz/downloaded_packages’
> library(sna)
starting httpd help server ... done
Error in attr(helpObj, "call") <- this.call :
attempt to set an attribute on NULL
Error: package/namespace load failed for ‘sna’
> library("sna")
Error in attr(helpObj, "call") <- this.call :
attempt to set an attribute on NULL
Error: package/namespace load failed for ‘sna’
> library('sna')
Error in attr(helpObj, "call") <- this.call :
attempt to set an attribute on NULL
Error: package/namespace load failed for ‘sna’
What happened? Thanks in advance
vacing

Answer 1

When loading the sna package using library(sna) or require(sna), the function .First.lib() is (still) called. This function is now among the defunct functions in the base package (see ?.First.lib), but that's beside the point.
Looking at the source files for sna, .First.lib() is defined in the file zzz.R and contains the line
ehelp <- help(package="sna")$info[[1]].
This does not work well if getOption("help_type") is not "text". You could, therefore, try setting this option before loading the package to see if that works.
options(help_type="text")
library(sna)
Does this still produce an error?
EDIT
Since the above still gives an error, and since the package has properties that are being phased out (i.e., no namespace, and using .First.lib()), I would recommend contacting the package's maintainer (perhaps with a reference to this question on SO):
packageDescription("sna")$Maintainer
Again, my suspicion is that the problem lies in creating the object ehelp in the .First.lib() function, which is called since there is no package namespace specified.

Answer 2

Ok this is the result of sessionInfo(), (I forgot to comment that i runs it into Eclipse)
> sessionInfo()
R version 2.14.2 (2012-02-29)
Platform: i486-pc-linux-gnu (32-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=en_US.UTF-8
[9] LC_ADDRESS=en_US.UTF-8 LC_TELEPHONE=en_US.UTF-8
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] Cairo_1.5-1 igraph_0.5.5-4 rj_1.0.3-7
loaded via a namespace (and not attached):
[1] rj.gd_1.0.3-3 sna_2.2-0 tools_2.14.2