[BioC] Error while building ExpressionSet from scratch....

[Bas Jansen]

Hi Bioconductor gurus:

I am trying to make ExpressionSet files for the analysis of PCR
arrays, to be able to analyze them in LMGene. However, I get the
following error message:

> eSet_xxx <- new("ExpressionSet", exprs = exprs_xxx, phenoData = phenoData_xxx, experimentData = experimentData)
Error in function (classes, fdef, mtable)  :
  unable to find an inherited method for function
"annotatedDataFrameFrom", for signature "data.frame"

I have done this a gazillion times before without a hitch, and
suddenly I'm not able to do so anymore. If anyone knows what's going
on, I am all ears.

Kind regards,
Bas

> sessionInfo()
R version 2.13.2 (2011-09-30)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

locale:
[1] C/UTF-8/C/C/C/C

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

other attached packages:
[1] LMGene_2.8.0     affy_1.30.0      survival_2.36-10 multtest_2.8.0
[5] Biobase_2.12.2

loaded via a namespace (and not attached):
[1] MASS_7.3-14           affyio_1.20.0         preprocessCore_1.14.0
[4] tcltk_2.13.2