Erro ao executar o Metasploit Framework no Mac OS X Yosemite

Question

Instalei o Metasploit Framework no Mac OS X Yosemite executando o Ruby 2.1.6 usando as instruções aqui .

Isso me dá um erro quando tento executá-lo:

/usernames/username/.rvm/rubies/ruby-2.1.6/lib/ruby/2.1.0/psych.rb:370:in 'parse':     (/usr/local/share/metasploit-framework/config/database.yml): mapping values are not allowed in this context at line 3 column 11 (Psych::SyntaxError)
from /usernames/username/.rvm/rubies/ruby-2.1.6/lib/ruby/2.1.0/psych.rb:370:in 'parse_stream'
from /usernames/username/.rvm/rubies/ruby-2.1.6/lib/ruby/2.1.0/psych.rb:318:in 'parse'
from /usernames/username/.rvm/rubies/ruby-2.1.6/lib/ruby/2.1.0/psych.rb:245:in 'load'
from /usernames/username/.rvm/rubies/ruby-2.1.6/lib/ruby/2.1.0/psych.rb:464:in 'block in load_file'
from /usernames/username/.rvm/rubies/ruby-2.1.6/lib/ruby/2.1.0/psych.rb:464:in 'open'
from /usernames/username/.rvm/rubies/ruby-2.1.6/lib/ruby/2.1.0/psych.rb:464:in 'load_file'
from /usr/local/share/metasploit-framework/lib/msf/ui/console/driver.rb:172:in 'initialize'
from /usr/local/share/metasploit-framework/lib/metasploit/framework/command/console.rb:62:in 'new'
from /usr/local/share/metasploit-framework/lib/metasploit/framework/command/console.rb:62:in 'driver'
from /usr/local/share/metasploit-framework/lib/metasploit/framework/command/console.rb:48:in 'start'
from /usr/local/share/metasploit-framework/lib/metasploit/framework/command/base.rb:82:in 'start'
from /usr/local/share/metasploit-framework/msfconsole:48:in '<top (required)>'
from /usernames/username/.rvm/gems/ruby-2.1.6/bin/msfconsole:23:in 'load'
from /usernames/username/.rvm/gems/ruby-2.1.6/bin/msfconsole:23:in '<main>'
from /usernames/username/.rvm/gems/ruby-2.1.6/bin/ruby_executable_hooks:15:in 'eval'
from /usernames/username/.rvm/gems/ruby-2.1.6/bin/ruby_executable_hooks:15:in '<main>'

Existe alguma correção para isso?