RTCGAToolbox 包下载 TCGA 数据出错

各位大神好！自己在学习用RTCGAToolbox下载TCGA数据时，遇到报错，报错如下：

          Error in file.rename(from = fileList, to = destfile) : 
  expanded 'from' name too long

以下是我输入的代码：

source("http://bioconductor.org/biocLite.R")
biocLite("RTCGAToolbox")
library(RTCGAToolbox)
length.MArrayLM = function(x) prod(dim(x))
getFirehoseDatasets()
getFirehoseRunningDates()
getFirehoseRunningDates(last = 2)
Data=getFirehoseData(dataset = "BRCA",runDate = "20140115",clinical = TRUE,
                     RNASeqGene = TRUE,mRNAArray = TRUE,Mutation = TRUE)

不知道问题出在哪里了，恳求大神指教，谢谢！?