Hi there, 

I have recently downloaded .CEL files from the Affymetric website at https://www.affymetrix.com/support/technical/sample_data/hapmap_trio_data.affx. 

Using ReadAffy() to input the data, I encountered an error message which says: 
Error in validObject(.Object) : invalid class "AffyBatch" object: invalid object for slot "reporterInfo" in class "AffyBatch": got class "NULL", should be or extend class "data.frameOrNULL"

Using read.affybatch("FILEPATH.CEL") also resulted in this error. Could you advise me on how I can read the data into R? 

Thanks and kind regards,
YY 
Department of Statistics
University of Oxford
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