Hmm....This error seems to happen when the rotateMesh() method is called.
Here's my code snippet...
Object3D aobject3d1[] = Loader.load3DS("3ds" + c + "terrain.3ds", 60F);
level = new Object3D(0);
for (int k = 0; k < aobject3d1.length; k++) {
Object3D object3d = aobject3d1[k];
object3d.rotateMesh();
level = Object3D.mergeObjects(level, object3d);
}
To be honest, I've been experimenting with JPct by taking the demos and modifying them. This example came from the FPS demo. I don't really know why the rotateMesh() method is there, nor do I know the effects of using the method.