[BioC] pamr package - problem with pamr.cv() function

[Vincent Negre]

Hello,
I would like to use pamr package. But I got on error
message using pamr.cv() function.

>      mycv <- pamr.cv(mytrain,mydata)
Error in matrix(NA, ceiling(fmax/nfolds) * nfolds,
length(totals)) : 
        object "fmax" not found


How can I fix this problem?
Thank you in advance for your help.

Best regards.
Vincent.