[BioC] Error using crlmm

[mcoyne at boninc.com]

I'm learning to use crlmm(); I tested out with one sample .CEL file from affy SNP500K genechip, genotyping.  I'm using Bioconductor on MAC OS 10.5; R version 2.9.0; bioconductor version 
2.4.     I keep getting the following error, and not able to figure out how to fix it; I appreciate any help.  Thank you for your help.

> crlmm (fulFileNames,outputDir,verbose=TRUE)
Preparing environment for normalization.
Normalization.
Error in if (nb == .nb && pc == .pc) return() : 
  missing value where TRUE/FALSE needed

My Coyne
mcoyne at boninc.com