Dynamo fails :(

gistfile1.txt

dynamo_demo(master)$ mix do clean, iex
Compiled lib/dynamo_demo.ex
Compiled lib/dynamo_demo/app.ex
Generated dynamo_demo.app
Interactive Elixir (0.7.0.dev) - press Ctrl+C to exit
Erlang R15B01 (erts-5.9.1) [source] [64-bit] [smp:4:4] [async-threads:0] [hipe] [kernel-poll:false] [dtrace]

iex(1)> DynamoDemo.start
Running DynamoDemo.App on port 3000 with Cowboy
:ok
iex(2)> 
=ERROR REPORT==== 22-Aug-2012::01:56:21 ===
** Handler 'Elixir-Dynamo-Cowboy-Handler' terminating in init/3
   for the reason error:undef
** Options were 'Elixir-DynamoDemo-App'
** Request was [{socket,#Port<0.3295>},
                {transport,cowboy_tcp_transport},
                {connection,keepalive},
                {pid,<0.163.0>},
                {method,'GET'},
                {version,{1,1}},
                {peer,undefined},
                {host,[<<"localhost">>]},
                {host_info,undefined},
                {raw_host,<<"localhost">>},
                {port,3000},
                {path,[<<"hello">>]},
                {path_info,undefined},
                {raw_path,<<"/hello">>},
                {qs_vals,undefined},
                {raw_qs,<<>>},
                {bindings,[]},
                {headers,
                    [{'Connection',<<"keep-alive">>},
                     {'Accept-Encoding',<<"gzip, deflate">>},
                     {'Accept-Language',<<"en-us">>},
                     {'Cache-Control',<<"max-age=0">>},
                     {'Accept',
                         <<"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8">>},
                     {'User-Agent',
                         <<"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8) AppleWebKit/536.25 (KHTML, like Gecko) Version/6.0 Safari/536.25">>},
                     {'Host',<<"localhost:3000">>}]},
                {p_headers,[{'Connection',[<<"keep-alive">>]}]},
                {cookies,undefined},
                {meta,[]},
                {body_state,waiting},
                {buffer,<<>>},
                {resp_state,waiting},
                {resp_headers,[]},
                {resp_body,<<>>},
                {onresponse,undefined},
                {urldecode,{#Fun<cowboy_http.urldecode.2>,crash}}]
** Stacktrace: [{'Elixir-Dynamo-Cowboy-Handler',init,
                    [{tcp,http},
                     {http_req,#Port<0.3295>,cowboy_tcp_transport,keepalive,
                         <0.163.0>,'GET',
                         {1,1},
                         undefined,
                         [<<"localhost">>],
                         undefined,<<"localhost">>,3000,
                         [<<"hello">>],
                         undefined,<<"/hello">>,undefined,<<>>,[],
                         [{'Connection',<<"keep-alive">>},
                          {'Accept-Encoding',<<"gzip, deflate">>},
                          {'Accept-Language',<<"en-us">>},
                          {'Cache-Control',<<"max-age=0">>},
                          {'Accept',
                              <<"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8">>},
                          {'User-Agent',
                              <<"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8) AppleWebKit/536.25 (KHTML, like Gecko) Version/6.0 Safari/536.25">>},
                          {'Host',<<"localhost:3000">>}],
                         [{'Connection',[<<"keep-alive">>]}],
                         undefined,[],waiting,<<>>,waiting,[],<<>>,undefined,
                         {#Fun<cowboy_http.urldecode.2>,crash}},
                     'Elixir-DynamoDemo-App'],
                    []},
                {cowboy_http_protocol,handler_init,2,
                    [{file,"src/cowboy_http_protocol.erl"},{line,258}]}]


nil
iex(3)>