Hi I downloaded GSE2034 dataset from GEO. But when I tried to read in these cel 
files using ReadAffy(), I got the following error message:

> library(affy)
> fls<-list.files("my directory to CEL files", ".*cel")## get cell files
> aBatch<-ReadAffy(filenames=fls)## input raw CEL files
Error: the following are not valid files:
    GSM177885.cel
   GSM177886.cel
   GSM177887.cel
   GSM177888.cel
:
:

Anyone has any suggestions what is going on?

> sessionInfo()
R version 2.12.2 (2011-02-25)
Platform: i386-pc-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United 
States.1252    LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                           LC_TIME=English_United States.1252    


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

other attached packages:
[1] affy_1.28.1    Biobase_2.10.0 rcom_2.2-3.1   rscproxy_1.3-1

loaded via a namespace (and not attached):
[1] affyio_1.18.0         preprocessCore_1.12.0 tools_2.12.2
	[[alternative HTML version deleted]]

