Logstash input twitter authorized error

Any one have experience with below error ?
Please help me

Logstash startup completed

←[33m {:exception=>Twitter::Error::Unauthorized, :backtrace=>["C:/logstash-1.5.1
/vendor/bundle/jruby/1.9/gems/twitter-5.12.0/lib/twitter/streaming/response.rb:2
1:in on_headers_complete'", "org/ruby_http_parser/RubyHttpParser.java:370:in<
<'", "C:/logstash-1.5.1/vendor/bundle/jruby/1.9/gems/twitter-5.12.0/lib/twitter/
streaming/response.rb:16:in <<'", "C:/logstash-1.5.1/vendor/bundle/jruby/1.9/ge
ms/twitter-5.12.0/lib/twitter/streaming/connection.rb:22:instream'", "C:/logst
ash-1.5.1/vendor/bundle/jruby/1.9/gems/twitter-5.12.0/lib/twitter/streaming/clie
nt.rb:116:in request'", "C:/logstash-1.5.1/vendor/bundle/jruby/1.9/gems/twitter
-5.12.0/lib/twitter/streaming/client.rb:36:infilter'", "C:/logstash-1.5.1/vend
or/bundle/jruby/1.9/gems/logstash-input-twitter-0.1.6/lib/logstash/inputs/twitte
r.rb:88:in run'", "C:/logstash-1.5.1/vendor/bundle/jruby/1.9/gems/logstash-core
-1.5.1-java/lib/logstash/pipeline.rb:176:ininputworker'", "C:/logstash-1.5.1/v
endor/bundle/jruby/1.9/gems/logstash-core-1.5.1-java/lib/logstash/pipeline.rb:17
0:in `start_input'"], :level=>:warn}←[0m
I'm using the below twitter config:-

input {
twitter {
consumer_key => ""
consumer_secret => ""
oauth_token => ""
oauth_token_secret => ""
keywords => [""]
full_tweet => true
}
}

output {
stdout { codec => dots }
elasticsearch {
host => "localhost:9200"
}
}

You do have proper values in the consumer_key, consumer_secret, oauth_token, and oath_token_secret options, right? I'm also not sure what happens when keywords contains just an empty string.

Same problem here. I generate my credentials in my twitter dev account, but no sucess. Anyone?