excel - Gdata package perl issue -

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i attempting follow easy 2-minute video tutorial on importing excel spreadsheet r data frame: http://www.screenr.com/qin8

i followed each step, including downloading , installing strawberry perl (32-bit) on win 7 pc, pointing r working directory, , entering following command in r: 

spreadsheet <- read.xls("targetspreadsheet.xls")

i receive error:

error in findperl(verbose = verbose) : perl executable not found. use perl= argument specify correct path. error in file.exists(tfn) : invalid 'file' argument

update:

i reset machine , set path perl:

perl <- "c:/strawberry/perl/bin/perl.exe"

then entered command:

df <- read.xls("spreadsheet.xls", perl = perl)

the command line returned error:

error in xls2sep(xls, sheet, verbose = verbose, ..., method = method, : intermediate file 'c:\users\aeid\appdata\local\temp\rtmpoxmywa\file18e45ed513c.csv' missing! in addition: warning message: running command '"c:\strawb~1\perl\bin\perl.exe" "c:/users/aeid/documents/r/win-library/2.15/gdata/perl/xls2csv.pl" "gft_show_wip_report(42).xls" "c:\users\aeid\appdata\local\temp\rtmpoxmywa\file18e45ed513c.csv" "1"' had status 2 error in file.exists(tfn) : invalid 'file' argument

what doing wrong?

thanks in advance help!

ame

after loading gdata package using library(gdata) says:

gdata: read.xls() unable read excel xls , xlsx files gdata: unless 'perl=' argument used specify location of gdata: valid perl intrpreter.

so, need path valid perl interpreter. using windows, case here, need check properties locate required perl interpreter.

#set path perl interpreter perl <- "c:/strawberry/perl/bin/perl5.18.2.exe"  try1file <- read.xls("my.one.filename.xls", perl = perl)

for multiple xls files:

> length(list.files()) [1] 65  try65files <- lapply(list.files(), ..., perl = perl)

if verbose = true, @ end of each file read:

loading 'f65.xls'... done. orignal filename: f65.xls number of sheets: 1 writing sheet number 1 ('sheet1') file 'c:\users\frankl~1.joh\appdata\local\temp\rtmpeks3fi\file13dc750950e4.csv' minrow=0 maxrow=32 mincol=0 maxcol=16   (ignored 0 blank lines.) 0  done. reading csv file  “c:\users\frankl~1.joh\appdata\local\temp\rtmpeks3fi\file13dc750950e4.csv” ... done.

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