Armitage error

[riste5]

I have error in Armitage
OS: backtrack5 r3

This is error, i have reinstall metasploit install metasploit from www.metasploit.com but not work.
This error is on all Post ... can Help me???

msf > use post/linux/gather/hashdump
msf  post(hashdump) > set SESSION 1
SESSION => 1
msf  post(hashdump) > run -j[*] Post module running as background job
[-] Post failed: ArgumentError Missing required option :session
[-] Call stack:
[-]   /opt/metasploit/msf3/lib/msf/core/db.rb:744:in `report_session_event'
[-]   /opt/metasploit/msf3/lib/msf/core/framework.rb:442:in `on_session_module_run'
[-]   /opt/metasploit/msf3/lib/msf/core/event_dispatcher.rb:183:in `block in method_missing'
[-]   /opt/metasploit/msf3/lib/msf/core/event_dispatcher.rb:181:in `each'
[-]   /opt/metasploit/msf3/lib/msf/core/event_dispatcher.rb:181:in `method_missing'