Mini B3d Demos and Free Models

yes. they are exported from UUnwrap3D. not sure why you cannot parse them. The Trex model, for example, only has 1 texture. The land has 3 textures. ground, bark and a lightmap.

both surfaces are set up in Unwrap3D as composite textures with the

tree surface
Composite:
UVset 1: bark.jpg
UVset2: lightmap.jpg

ground surface
Composite:
UVset 1: ground.jpg
UVset2: lightmap.jpg