ERROR: Unsupported effects combination for shader Diffuse, material De

[Douglasmrs]

Hello!
I need help! Some days I am trying to export model GE C36-7, but when you click to preview or export the model, this error message appears! 3DSMax9 I use my Portuguese language of Brazil. I have a hard time to understand this type of error.
Would anyone please help me if I am grateful!

Sem título por Railworks MRS, no Flickr

[SMMDigital]

In my experience, I get that error if I am trying to use an improper shader in the Rail Sim materials box. For example, trying to use the shader "TrainBumpSpecEnvMask.fx" without using a Normal, Environment, or Specular map. Or, using a TexDiff or TrainBasicObjectDiffuse shader on a part that has a one of the above named maps.

If you know which part may be causing the problem, remove the Normal, Specular, or Bump map, or change the name of the Shader until you stop getting this error.

[Douglasmrs]

Well I did not understand anything! because of my language.
but there is some other 3d modeling program, except 3dcrafter .... to export the model without problems?