[R] error using daisy() in library(cluster). Bug?

[javier garcia - CEBAS]

Hi,
I'm using the cluster library to examine multivariate data.
The data come from a connection to a postgres database, and I did a short R 
script to do the analisys. With the cluster version included in R1.8.0, daisy 
worked well for my data, but now, when I call daisy, I obtain the following 
messages:
---------
Error in if (any(sx == 0)) { : missing value where TRUE/FALSE needed
In addition: Warning message:
binary variable(s) 116 treated as interval scaled in: 
daisy(concentracion.data.frame, stand = TRUE)
---------

Al the variables in my dataframe are numeric. Although I've got NA values, 
and I've seen that if a do the analisys for a subset of the dataframe, 
selecting just columns with no NA, the result is good.
Could this be a bug?

Thanks, and best regards

Javier