ff package on a server... read.table.ffdf "cannot change working directory"

Question

This may be something simple but I have search a LOT and can't find how to fix it.

I am using Rstudio 2.15.1 on a server because we use big data sets and the server has more ram to deal with it. I want to load a csv file with

x <- read.csv.ffdf(file=file.path(getwd(),"test.csv"))

from the "ff" package and in the pc it works fine, but in the server I get the message

Error in setwd(dfile) : cannot change working directory

Does anyone has any idea on how can I fix this?