OK, looks like we have a problem.
I found this:
os.path.normcase('/') and I hope it works.
can anyone test it (in windows) please:
Edit your g3d_xml_exporter_v1.0.py ( the blender export script for glest )
and replace
textureName = textureName.split('/')[-1] #get only the filename
with
textureName = textureName.split(os.path.normcase('/'))[-1] #get only the filename
It works in linux, so what about windows?