Foro de elhacker.net

ayuda me sale este eeror cuando pongo "msfconsole"
/usr/lib/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>): invalid trailing UTF-8 octet at line 1 column 1 (Psych::SyntaxError)
   from /usr/lib/ruby/1.9.1/psych.rb:203:in `parse_stream'
   from /usr/lib/ruby/1.9.1/psych.rb:151:in `parse'
   from /usr/lib/ruby/1.9.1/psych.rb:127:in `load'
   from /opt/metasploit/apps/pro/msf3/lib/msf/ui/console/driver.rb:188:in `initialize'
   from /opt/metasploit/apps/pro/msf3/msfconsole:148:in `new'
   from /opt/metasploit/apps/pro/msf3/msfconsole:148:in `<main>'
ya busque en san google pero no encuentro nada