Matt, The symptoms you get are compatible with a common mistake : forgetting to close the output dataset with GDALClose().
Otherwise, if it's a more serious issue, I'd advise you studying carefully the source code of gdalwarp : http://trac.osgeo.org/gdal/browser/trunk/gdal/apps/gdalwarp.cpp (I've tested that if I modify gdalwarp.cpp to remove the closing of the output dataset, I just get your symptoms) Best regards, Even _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev