Snow Leopard

gistfile1.txt

kenneth@Kenneth-Kalmers-MacBook-Pro ~ $ gem sing treetop --backtrace -V
ERROR:  While executing gem ... (NameError)
    uninitialized constant DL::Importable
	/Users/kenneth/.rvm/gems/ruby/1.9.1/gems/midiator-0.3.2/lib/midiator/drivers/dls_synth.rb:33:in `<module:AudioToolbox>'
	/Users/kenneth/.rvm/gems/ruby/1.9.1/gems/midiator-0.3.2/lib/midiator/drivers/dls_synth.rb:32:in `<class:DLSSynth>'
	/Users/kenneth/.rvm/gems/ruby/1.9.1/gems/midiator-0.3.2/lib/midiator/drivers/dls_synth.rb:28:in `<top (required)>'
	/Users/kenneth/.rvm/gems/ruby/1.9.1/gems/midiator-0.3.2/lib/midiator/interface.rb:53:in `require'
	/Users/kenneth/.rvm/gems/ruby/1.9.1/gems/midiator-0.3.2/lib/midiator/interface.rb:53:in `use'
	/Users/kenneth/.rvm/gems/ruby/1.9.1/gems/rubygems-sing-1.1.0/lib/rubygems/commands/sing_command.rb:58:in `execute'
	/Users/kenneth/.rvm/ruby-1.9.1-p243/lib/ruby/site_ruby/1.9.1/rubygems/command.rb:257:in `invoke'
	/Users/kenneth/.rvm/ruby-1.9.1-p243/lib/ruby/site_ruby/1.9.1/rubygems/command_manager.rb:132:in `process_args'
	/Users/kenneth/.rvm/ruby-1.9.1-p243/lib/ruby/site_ruby/1.9.1/rubygems/command_manager.rb:102:in `run'
	/Users/kenneth/.rvm/ruby-1.9.1-p243/lib/ruby/site_ruby/1.9.1/rubygems/gem_runner.rb:58:in `run'
	/Users/kenneth/.rvm/ruby-1.9.1-p243/bin/gem:26:in `<main>'