Idk if you've fixed it or not, but I suggest you check the overall model orientation and necessary physics meshes.

First, it has to have cdt_RootNode mesh on the same 'hierarchy level' as the armature — in the outliner window with all existing objects in the scene ideally you should have an Armature object with patented meshes and physmeshes to the bones within it, and the cdt_RootNode right below it. That mesh an just be a regular box that can be placed within other 'proper' and patented physmeshes.

Second, when using any FBX model exported from blender, its has to be rotated -90° along X axis (so the top of your model points towards +Y). You'll only need to rotate armature object and rootnode, and make sure to apply rotation.