[GRASS-dev] Error on a winGRASS installer

Greetings

I'm developing an winGRASS installer. To do so, I'm following this instructions (http://trac.osgeo.org/grass/wiki/CompileOnWindows#CreatingaWinGRASSInstaller). So far as I was able to create an installer, install it a visualize data but when I try to run a scripts that uses GDALWARP I'm getting this error:

ERROR 4: Unable to open EPSG support file gcs.csv.
Try setting the GDAL_DATA environment variable to point to
the
directory containing EPSG csv files.
ERROR 1: Translating source or target SRS failed:

In the OSGEO4W wasn't getting this error so I believe that it has something to do with the installer that I created. can anyone (I predict that Martin Landa is the best person to answer to this) explain me what am I missing?

Thanks
Antonio Rocha

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