R help - Jul 2005 - reorder bug in heatmap.2?

I want to plot a heatmap without reordering the columns.  This works 
fine in "heatmap":

 > heatmap(meanX[selected,], col=cm.colors(256), Colv=NA)

But in "heatmap.2" I get:

 > heatmap.2(meanX[selected,], col=cm.colors(256), Colv=NA)
Error in if (!is.logical(Colv) || Colv) ddc <- reorder(ddc, Colv) :
	missing value where TRUE/FALSE needed

(Note that instructions for the use of "Colv" and "Rowv" are
identical
in both heatmap and heatmap.2 documentation)

Is there another way to not reorder columns in heatmap.2?

Thanks in advance,

Jake