Dear Sir, 
i am doing work on microarray data analysis in R using Bioconductor. i have installed all the default packages and other required packages. when i used  "qc(myobject)" , i am getting the following error message:

Error in setQCEnvironment(cdfn) : 
  Could not find array definition file ' drosophila2cdf.qcdef '. Simpleaffy does not know the QC parameters for this array type.
See the package vignette for details about how to specify QC parameters manually.


Nutan Chauhan
M.Sc.(Biotechnology)
M.Tech.(Bioinformatics)


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