Must change r temp folder to somthing thAT IS NOT RECOGINIZED BY internet explorer as a temp folder.

tempstr = paste("TMP = '",unlist(strsplit(tempdir(), "Temp"))[1], "ocpu_t'", sep = "")
write(tempstr, file=file.path(Sys.getenv('R_USER'), '.Renviron'))

Change internet security settings by opening 'Internet Explorer' click  'tools' -> 'internet options' -> 'security' tab and make sure the boxes shown in IE_Secutity.jpeg are checked.