Hi I'm using R and facing same error in ReadAffy. Can u please tell me about this Ihave downloaded the complete file but still it gives me error. Can anyone let me know about it please it will be very helpful.. I'm working on GSE42902

> Study1 = "GSE42902"
> Gse42902dat = getGEO('GSE42902')
Found 1 file(s)
GSE42902_series_matrix.txt.gz
trying URL 'ftp://ftp.ncbi.nlm.nih.gov/pub/geo/DATA/SeriesMatrix/GSE42902/GSE42902_series_matrix.txt.gz'
ftp data connection made, file length 541891 bytes
opened URL
downloaded 529 Kb

File stored:
> filePaths=getGEOSuppFiles("GSE42902")
[1] "ftp://ftp.ncbi.nlm.nih.gov/pub/geo/DATA/supplementary/series/GSE42902/"
trying URL 'ftp://ftp.ncbi.nlm.nih.gov/pub/geo/DATA/supplementary/series/GSE42902//GSE42902_RAW.tar'
ftp data connection made, file length 385873920 bytes
opened URL
downloaded 368.0 Mb

trying URL 'ftp://ftp.ncbi.nlm.nih.gov/pub/geo/DATA/supplementary/series/GSE42902//filelist.txt'
ftp data connection made, file length 1166 bytes
opened URL
downloaded 1166 bytes

> tarfile <- grep("\\.tar$", rownames(filePaths), value = TRUE) 
> untar(tarfile, exdir="GSE55650") 
> untar(tarfile, exdir="GSE42902") 
> celFiles <- unlist(list.files("GSE42902", pattern = "\\.CEL.gz", full.names = TRUE))

Error:

> gse42902preset = ReadAffy(filenames = celFiles) 
Error: cannot allocate vector of size 800.0 Mb
In addition: Warning messages:
1: In `colnames<-`(`*tmp*`, value = c("GSM1053073_S0608F0055a.CEL.gz",  :
  Reached total allocation of 1535Mb: see help(memory.size)
2: In `colnames<-`(`*tmp*`, value = c("GSM1053073_S0608F0055a.CEL.gz",  :
  Reached total allocation of 1535Mb: see help(memory.size)
3: In `colnames<-`(`*tmp*`, value = c("GSM1053073_S0608F0055a.CEL.gz",  :
  Reached total allocation of 1535Mb: see help(memory.size)
4: In `colnames<-`(`*tmp*`, value = c("GSM1053073_S0608F0055a.CEL.gz",  :

Please help me out I'll be very thankful. Reached total allocation of 1535Mb: see help(memory.size)