rggobi not in bin/macosx/universal/contrib/2.6/PACKAGES on CRAN

Hi,

R-2.6 + install.packages() doesn't find rggobi on Mac OS X.
The .tgz file is here:

  http://cran.fhcrc.org/bin/macosx/universal/contrib/2.6/

but it is not listed in the PACKAGES file:

  http://cran.fhcrc.org/bin/macosx/universal/contrib/2.6/PACKAGES

Any idea why?

Thanks!
H.