[gdal-dev] gdalbuildvrt does not support heterogenous band characteristics

[Matt Wilkie]

>     Likely Quickbird_06m10.tif has more or less bands than the previous
> files, or band bit depth is different.

That was it, thanks.

For some reason although they were all created from the same source and 
process (arcmap > export > selected area) some images are 8bit RGB and 
others 16bit grey (though still 3 bands). Weird.

-matt