Problems exporting biped

Hi

I've had a problem using ofusion exporter with a biped in 3dsmax8.
the exporter doesn't actually give me errors, but when I try to load the mesh into Ogre mesh viewer it returns this error:

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Details:
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Error #: 9
Function: MeshSerializerImpl::readGeometryVertexBuffer
Description: Buffer vertex size does not agree with vertex declaration.
File: \Projects\OgreCVS\Branches\Azathoth\ogrenew\OgreMain\src\OgreMeshSerializerImpl.cpp
Line: 591
Stack unwinding: <<beginning of stack>>

can anyone help me, please?

What Ogre engine version are you using in your application/viewer?

I'm using Ogre CEGui Mesh Viewer - 1.0.6
my version of 3dsmax is 8.0 and my applications are made using Ogre SDK 1.2

Your mesh viewer is using a previous Ogre version, download or compile a Dagon based version