[Bioc-sig-seq] Error while installing Rolexa

[Purnachander]

Dear All,
I tried to install Rolexa package into my system. However, I encountered 
the following error message:

Error Message :
Warning in install.packages(pkgs = pkgs, repos = repos, dependencies = 
dependencies, :
argument 'lib' is missing: using '/usr/lib/R/library'
Warning message:
In getDependencies(pkgs, dependencies, available, lib) :
package ‘Rolexa’ is not available

Here I'm unable to figure out the error message, so can you explain what 
the error is ?

sessionInfo():
R version 2.9.0 (2009-04-17)
i386-redhat-linux-gnu

locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] rtracklayer_1.4.1 RCurl_1.3-0 bitops_1.0-4.1

loaded via a namespace (and not attached):
[1] Biobase_2.4.1 Biostrings_2.12.8 BSgenome_1.12.5 IRanges_1.2.3
[5] tools_2.9.0 XML_2.6-0


Regards,
Purnachander G