Rayfront - license not found

Hey,
I downloaded a prog called Rayfront and installed it - then installed the license key as instructed but when I tried to appload the arx into the autocad it keeps saying that license key not found.
When I open the Rayfront program it opens fine but when I try importing a dxf file into the prog it says "no surface prinmitives found in file"
Any similar experiences? I´m running autocad 2002.
thanks. Masa

Matti Viita wrote:
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(Assuming Rafront is a rendering program) It sounds like the issue is your model (Acad file), having nothing to do with the license key.
Does your model contain any solids or faces that can be rendered?

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On Fri, 24 Oct 2003 09:30:29 -0400, TomD
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Yes...it´s a rendering/ray tracing program. I did a test file which contained a solid, boxes made of faces and regions, but still the same thing.
Here´s more on the program: http://www.schorsch.com /
I mailed the same question to the schorsch -guy but my computer crashed when I sent the mail so I´m not sure if the mail left...better mail it again.
thanks anyway,
Matti