Runtime error : mass must be > 0

Hi,
I'm in the process of identifying which phyisics library I'm going to use in my project. My first try is OgreOde, but here is my problem. I'm trying in a very simple scene imported with oFusion to create a vehicle using OgreOde sample media. I almost copied and paste code from Landscape sample. I've tried with the Jeep and the subaru but it keep saying :

ODE Message 2: mass must be > 0 (..\..\ode\src\mass.cpp:44)
ODE Message 2: mass must be > 0 (..\..\ode\src\mass.cpp:44)

Although I made no modification to resources files !
I've tried with prebuild SDK and source file of Ogre. I can compile and run OgreOde samples with no problem
Any idea of what's wrong ?
Thanks.

I almost copied and paste code from Landscape sample.

Obviously you did not copy the part where the mass is set If you did, please show some code.

Here is the code :OgreOde_Prefab::Vehicle* vehicle = static_cast <OgreOde_Prefab::Vehicle*>(mDotOgreOdeLoader->loadObject("subaru.ogreode", "Subaru", "mycar"));The loader should manage mass settings for me, and nothing more is done in the sample (or I missed something ...)
I do have added the folder where all resources are, and I even tried to set manually the mass with that :vehicle->getBody()->setMass(OgreOde::Mass(1.5, Ogre::Vector3::ZERO, Ogre::Matrix3::IDENTITY));
vehicle->getWheel(0)->getBody()->setMass(OgreOde::Mass(0.1, Ogre::Vector3::ZERO, Ogre::Matrix3::IDENTITY));
vehicle->getWheel(1)->getBody()->setMass(OgreOde::Mass(0.1, Ogre::Vector3::ZERO, Ogre::Matrix3::IDENTITY));
vehicle->getWheel(2)->getBody()->setMass(OgreOde::Mass(0.1, Ogre::Vector3::ZERO, Ogre::Matrix3::IDENTITY));
vehicle->getWheel(3)->getBody()->setMass(OgreOde::Mass(0.1, Ogre::Vector3::ZERO, Ogre::Matrix3::IDENTITY));But still get the same error message. I'd rather think of a problem between Ogre's Ode version and modified version used by OgreOde ?

that might be the reason, as ogreode uses the latest ode version from ode's svn, check it out. anyway i am not sure if you can use the class ogreode::Mass directly, try out ogreode::BoxMass and the other derivatives instead.

I'll try that, anyway, I may jump to PhysiX library using NxOgre wrapper ... thanks for your help

another one lost to the dark side