[gdal-dev] GDALWarp GCP

[Even Rouault]

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