* using log directory 'd:/Rcompile/CRANpkg/local/2.12/AER.Rcheck'
* using R version 2.12.2 (2011-02-25)
* using platform: i386-pc-mingw32 (32-bit)
* using session charset: ISO8859-1
* checking for file 'AER/DESCRIPTION' ... OK
* this is package 'AER' version '1.1-8'
* checking package name space information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking whether package 'AER' can be installed ... ERROR
Installation failed.
The installation logfile:
* installing *source* package 'AER' ...

  Using auto-selected zip option '--use-zip-data'

** R
** data
** demo
** inst
** preparing package for lazy loading
Loading required package: MASS
Loading required package: nnet
Loading required package: survival
Loading required package: splines
Loading required package: zoo

Attaching package: 'zoo'

The following object(s) are masked from 'package:base':

    as.Date, as.Date.numeric

** help
*** installing help indices
** building package indices ...
** testing if installed package can be loaded
Error : object 'nobs' not found whilst loading namespace 'AER'
ERROR: loading failed
* removing 'd:/Rcompile/CRANpkg/lib/2.12/AER'
* restoring previous 'd:/Rcompile/CRANpkg/lib/2.12/AER'