Hi,
I am upgrading packages since R have been upgraded on our linux server.
But an error occurs when installing Biobase 2.26.
I tried installing the currently installed version (just to see) but I have the same error, so depending on the R version.
Thanks for your help.
Yannick

Code and info below:
--------------------------
> biocLite(Biobase)
installing to /save/ylippi/LIB/Rlib/Biobase/libs
** R
** data
** inst
** preparing package for lazy loading
Warning in superClassDepth(ClassDef, simpleOnly = simpleOnly) :
  class “list” extends an undefined class, “AssayData”
Error in extends(classDef2, cliDef) :
  'class2' must be the name of a class or a class definition
Error in setClass("Versions", contains = "list") :
  error in contained classes ("list") for class “Versions”; class definition removed from ‘Biobase’
Error : unable to load R code in package ‘Biobase’
ERROR: lazy loading failed for package ‘Biobase’
* removing ‘/path2libloc/Biobase’
* restoring previous ‘/path2libloc/Biobase’

> sessionInfo()
R version 3.1.2 (2014-10-31)
Platform: x86_64-unknown-linux-gnu (64-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=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

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

other attached packages:
[1] Biobase_2.20.1     BiocGenerics_0.6.0 gplots_2.11.3      MASS_7.3-35
[5] KernSmooth_2.23-13 caTools_1.14       gdata_2.13.3       gtools_3.4.1

loaded via a namespace (and not attached):
[1] bitops_1.0-6