R help - Nov 2010 - problems with rJava

Hello, using r-2.12.0 on a Toshiba laptop with Win7
I am trying to install JGR, iut installs OK but when loading, complains about
rJava
so I did:
> install.packages("rJava")
Installing package(s) into ?I:\R\cran?
(as ?lib? is unspecified)
trying URL
'http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.12/rJava_0.8-8.zip'
Content type 'application/zip' length 636680 bytes (621 Kb)
opened URL
downloaded 621 Kb

The downloaded packages are in
       
C:\Users\Heberto\AppData\Local\Temp\Rtmpyd0JHa\downloaded_packages
> library(rJava)
Error : .onLoad failed in loadNamespace() for 'rJava', details:
  call: inDL(x, as.logical(local), as.logical(now), ...)
  error: unable to load shared object
'I:/R/cran/rJava/libs/i386/rJava.dll':
  LoadLibrary failure:  The device is not ready.

Error: package/namespace load failed for 'rJava'
> 
rJava.dll is in that place. Is it a problem witm Win7? 
Thanks

R.Heberto Ghezzo Ph.D.
Montreal - Canada

Hi All, and Heberto,

Did you ever resolve your installation problem with rJava?

I have a new windows 7 machine and can't seem to get it installed correctly.
I do have Java installed.  I download rJava without proble, then: 
> install.packages("rJava")
Installing package(s) into ?C:\Users\Patrick\Documents/R/win-library/2.12?
(as ?lib? is unspecified)
trying URL
'http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.12/rJava_0.8-8.zip'
Content type 'application/zip' length 637125 bytes (622 Kb)
opened URL
downloaded 622 Kb


The downloaded packages are in
        C:\Users\Patrick\AppData\Local\Temp\Rtmp9zcM7g\downloaded_packages

Looks like it downloaded fine to my eyes. But in the next step I get an
error:
> library(rJava)
Error in utils::readRegistry(key, "HLM", 2) : 
  Registry key 'Software\JavaSoft\Java Runtime Environment' not found
Error in utils::readRegistry(key, "HLM", 2) : 
  Registry key 'Software\JavaSoft\Java Development Kit' not found
Error : .onLoad failed in loadNamespace() for 'rJava', details:
  call: fun(...)
  error: JAVA_HOME cannot be found from the Registry
Error: package/namespace load failed for 'rJava'

I'm not sure how to check where R is looking for rJava vs where it lives,
this seems to be an issue in other posts, although they have different
errors. 

I'm a novice still at R. I see a lot of posts on this topic, but few are
recent.  Help would be much appreciated.  


Thanks! 

Kara Moore
Evolution and Ecology
University of California, Davis, USA



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