Quick breakdown on exportables: Bryce Primitives (cube, sphere, etc.) and rocks: export as .obj only. This is a proprietary (and indecipherable) Bryce format. Other programs cannot use this. Imported meshes (DXF, 3ds, whatever): these are exportable ONLY if they were imported and have not been ungrouped/regrouped. Sometimes, ungrouping and regrouping is OK... but not always, it's weird. Use the Edit/Ctrl-D trick above. Terrains: exportable via the Terrain room. Several formats, including .obj, .dxf, .3ds are supported. Materials: exportable as Bryce presets only. Textures: exportable as Bryce presets only (however, you can get a full-screen planar preview of a texture, then take a screenshot, to export as a bitmap). Animation: Not exportable. Basically, Bryce is designed as a "final step" renderer, rather than a modeller.... it imports many things but exports virtually nothing.