fetchResults crashing on physX 3.3

Hi,
I took as example a very basic snippet (hello world), and created a base ground:

PxRigidStatic* groundPlane = PxCreatePlane(*gPhysics, PxPlane(0,1,0,0), *gMaterial);
    gScene->addActor(*groundPlane);

And a simple 1-unit size cube (as PxTriangleMeshGeometry) at height=5:

triangleMeshDesc.points.count           = vCount;
        triangleMeshDesc.points.stride          = sizeof(PxVec3);
        triangleMeshDesc.points.data            = verts;
 
        triangleMeshDesc.triangles.count        = nbTriangles;
        triangleMeshDesc.triangles.stride       = 3*sizeof(PxU32);
        triangleMeshDesc.triangles.data = indices

        PxTriangleMesh*	gTriangleMesh =gCooking->createTriangleMesh(triangleMeshDesc, phx->gPhysics->getPhysicsInsertionCallback());
        
        if (!gTriangleMesh)
            return;
        PxTriangleMeshGeometry triGeom(gTriangleMesh);
        
        PxTransform localTm(PxVec3(0,5,0));
        PxRigidDynamic* body =gPhysics->createRigidDynamic(localTm);
        if (!body)
            return;
        PxShape* triangleMeshShape = phx->gPhysics->createShape(triGeom, *gMaterial);

        body->attachShape(*triangleMeshShape);

        if (!triangleMeshShape)
            return;
        
        phx->gScene->addActor(*body);
        triangleMeshShape->release();

I can properly run the simulation (series of simulate and fetchResults(true) and see the cube falling, but as soon as the cube touches the ground, the simulation crashes (maya plugin).
Using a simple pxBox geometry instead of my triangle custom geometry (triGeom) works fine. Is there anything specific I am missing above when cooking my geometry ?

The PxTriangleMeshGeometry is not adapted for dynamic rigid actors. I used Convex shapes and it is working well now.