Hi Sven,
It seems you are using old version of GDAL2Tiles, from GDAL 1.5, there
is a new version available in GDAL 1.6, which supports Google Maps
tiles.
It is not clear how your data look-like, I guess the Erdas image you
are trying to tile is using 16-bit values in the raster.
(Seeing gdalinfo
I try to generate Google compatible tiles from one big rasterimage (EPSG:4326).
This does however not work:
Input (out-4326.img):
Driver: HFA / Erdas Imagine Images (.img)
Size: 87231 x 57321 x 3
Projection: GE
