Hello, I am a researcher for mesh processing, and I’m using your openmesh library. thanks for your development working, but I  got a bug when I run you official code, “building a cube” [http://www.openmesh.org/media/Documentations/OpenMesh-Doc-Latest/a04088.html].  No matter whether I type codes by myself or copy your example code , there will always be a bug saying that there is a unexpectation  occurring, that there is visiting conflict in posision 0x00000000000000.