Can you send me the scene ...<<

Sure can.
I stripped it from most of the environment (can't give away my whole game setup can I now ;o) ) and left the part I tried to export. The only thing not exportable in the scene are the spots (by the mirror). I did not includ them in my earlier export test.

The file is 5,2 Mb zipped. I'll IM you with a link for download.
It will probably scream for a bunch of textures here and there. I didn't have time looking them all up. But if it is needed I'll do it later.

Maybe Vue 6 will do basic exporting without the use of hoops.

Exporting from Vue: Trees, plants, rocks, for use in a Poser scene. Either "as is", final render in Poser, or for a roundtrip: having the exact terrain from Vue will allow me to pose the characters exactly on the terrain, so I don't have to hide feet by rocks, plants or cropping. I found that Vue objects should be scaled down by a factor of 100 when imported into Poser. The position of the imported object does not have any relation with the position of the exported object though. Which makes the "roundtrip" pretty tough.

Tiny sent me a scene to test, here is the result. Key message #1 - it worked as you can see in the Cinema 4D preview renderer. Key message #2 - Poser does not import the file correctly. A problem with Poser 6. Needs to be reported i think. Major issue for mistakes is one little automatic thing Vue does i found. When an object is selected in the scene, the export scene dialog switches to "export selected object only". Hard to see, easily overseen. I switched that off and had everything - beside some locked for export items in the scene - in the 3ds file. Even the lights. And much more amazing, the camera came over as well correctly!!! A zone i have not verified so far is the texture/material part of the exports. I am interested in meshes more than in materials. Reason? Materials are highly dependant to the source application. Every program has it's individual settings that are difficult to understand for an importing program. That is normal. But osme basics should work of course and i will check that a little more detailed the next days probably.