Bioequivalence and Bioavailability Forum

Dear BEAR inventor,

Today, I just installed the new version of BEAR 2.5.2 on R 2.11.0 as suggested.
Installation was fine.
But when I loaded BEAR, the message below appear before BEAR menu.

........................
Loading required package: gdata
gdata: Unable to locate valid perl interpreter
gdata:
gdata: read.xls() will be unable to read Excel XLS and XLSX files unless the 'perl=' argument is
gdata: used to specify the location of a valid perl intrpreter.
gdata:
gdata: (To avoid display of this message in the future, please ensure perl is installed and
gdata: available on the executable search path.)
gdata: Unable to load perl libaries needed by read.xls()
gdata: to support 'XLX' (Excel 97-2004) files.

gdata: Unable to load perl libaries needed by read.xls()
gdata: to support 'XLSX' (Excel 2007+) files.

gdata: Run the function 'installXLSXsupport()'
gdata: to automatically download and install the perl
gdata: libaries needed to support Excel XLS and XLSX formats.
................................................................

I don't know whether or not this will cause any errors or incorrect analysis.
It seems to me, BEAR run well. But I just worry about these error message.

Could you tell me about these errors? or I just ignore it.

Many Thanks
Sarawut

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Edit: Category changed. [Helmut]