flapjack crash on startup with api enabled - no message in system.log on my mac

gistfile1.txt

2013-11-06T15:45:47+10:30 [INFO] :: flapjack-api :: starting api - class
2013-11-06T15:45:47+10:30 [FATAL] :: flapjack-coordinator :: RuntimeError
no acceptor (port is in use or requires root privileges)
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.3/lib/eventmachine.rb:526:in `start_tcp_server'
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.3/lib/eventmachine.rb:526:in `start_server'
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/thin-1.5.1/lib/thin/backends/tcp_server.rb:16:in `connect'
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/thin-1.5.1/lib/thin/backends/base.rb:55:in `block in start'
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/thin-1.5.1/lib/thin/backends/base.rb:61:in `call'
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/thin-1.5.1/lib/thin/backends/base.rb:61:in `start'
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/thin-1.5.1/lib/thin/server.rb:159:in `start'
/Users/jesse/src/flpjck/flapjack/lib/flapjack/pikelet.rb:252:in `start'
/Users/jesse/src/flpjck/flapjack/lib/flapjack/coordinator.rb:134:in `block in add_pikelets'
/Users/jesse/src/flpjck/flapjack/lib/flapjack/coordinator.rb:134:in `each'
/Users/jesse/src/flpjck/flapjack/lib/flapjack/coordinator.rb:134:in `add_pikelets'
/Users/jesse/src/flpjck/flapjack/lib/flapjack/coordinator.rb:32:in `block in start'
/Users/jesse/.rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/em-synchrony-1.0.3/lib/em-synchrony.rb:38:in `block (2 levels) in synchrony'
2013-11-06T15:45:47+10:30 [INFO] :: flapjack-notifier :: Exiting main loop.
2013-11-06T15:45:47+10:30 [DEBUG] :: flapjack-processor :: 0 events waiting on the queue
2013-11-06T15:45:47+10:30 [DEBUG] :: flapjack-processor :: Raw event received: #<Flapjack::Data::Event:0x007fc5de0989d0 @type="noop", @state=nil, @entity=nil, @check=nil, @time=nil, @summary=nil, @details=nil, @acknowledgement_id=nil, @duration=nil>
2013-11-06T15:45:47+10:30 [INFO] :: flapjack-processor :: Exiting main loop.
 done.