[BioC] unclear on error in affxparser

[Elizabeth Purdom]

Hi,
This is a question regarding a function in the affxparser package. I am 
trying to create a cdf using writeCdf and the inputted objects are lists 
I created myself (paring down an existing cdf). I get the following 
error "Number of elements in argument 'qcUnitLengths' does not match 
'nUnits'" (traceback is below). I don't understand why the number of 
elements of 'qcUnitLengths' SHOULD match 'nUnits'.  Aren't those 
entirely different lists with entirely different number of elements? It 
seems like it should match nQcUnits. Or is there actually a different 
error check going on that I'm failing and the outputted error message is 
wrong? I think something's probably off, since I know people who have 
used similar types of lists to create cdfs and presumably have not 
gotten this error. So I'll try to track it down assuming something 
doesn't match that should, but it would be helpful to know where to start...
Thanks,
Elizabeth Purdom

I have the following traceback from the error I get running on a small 
test case of my code:
 > traceback()
5: stop("Number of elements in argument 'qcUnitLengths' does not match 
'nUnits'")
4: .initializeCdf(con = con, nRows = cdfHeader$nrows, nCols = 
cdfHeader$ncols,
        nUnits = cdfHeader$nunits, nQcUnits = cdfHeader$nqcunits,
        refSeq = cdfHeader$refseq, unitnames = unitNames, qcUnitLengths 
= qcUnitLengths,
        unitLengths = unitLengths)
3: writeCdfHeader(con = con, cdfheader, unitNames = names(cdf),
        qcUnitLengths = qcUnitLengths, unitLengths = unitLengths,
        verbose = verbose)
2: writeCdf(outfile, cdfheader = hdr, cdf = outList, cdfqc = qc,
        overwrite = TRUE, verbose = 10)
1: createTranscriptCDF(cdfProbeset, csvAnnotFile, linesPerRead = 10,
        type = "extended", dirLoc = getwd())