Have you guys made sure that you set Run as admin on Amritage and Metasploit when running in windows. Im not sure but i belive i saw somthing on the site that anti-virus software will cause you to encounter "undesired behaviour" so disable that (or maybe add exceptions). On BT5 however i had to download BT5 R2. Try this link BT5 Known Bugs maybe this might help but