[BioC] Problem with Expresso and RMA

[linda_yue at agilent.com]

Hi,

What I use is the latest version of R: rw2001. And I got the following
error message when I run RMA:

Error in sigToEnv(signature, fdef) : Trying to get slot "signature" from
an object of a basic class ("NULL") with no slots
In addition: Warning message: 
Incompatible phenoData object. Created a new one.
 in: read.affybatch(filenames = files)

Which information I should provide furthur or the latest version of R
has some bugs?
Thanks a lot!

Xin LIU

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