cucumber nagios .feature

Hi;
I install cucumber nagios on my Linux Machine, but when i run the feature, comes this problem:
# cucumber-nagios browse.feature wrong number of arguments (8 for 7) (ArgumentError)
/var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:173:in after_step_result' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:173:insend' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:173:in send_to_all' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:171:ineach' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:171:in send_to_all' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:164:inbroadcast' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:104:in visit_step_result' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/step_invocation.rb:43:invisit_step_result' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/step_invocation.rb:39:in accept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:99:invisit_step' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:163:in broadcast' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:98:invisit_step' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/step_collection.rb:15:in accept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/step_collection.rb:14:ineach' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/step_collection.rb:14:in accept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:93:invisit_steps' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:163:in broadcast' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:92:invisit_steps' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/scenario.rb:55:in accept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime.rb:80:inwith_hooks' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime.rb:96:in before_and_after' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime.rb:79:inwith_hooks' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime/support_code.rb:120:in call' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime/support_code.rb:120:inaround' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/language_support/language_methods.rb:9:in around' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/language_support/language_methods.rb:91:incall' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/language_support/language_methods.rb:91:in execute_around' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/language_support/language_methods.rb:8:inaround' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime/support_code.rb:119:in around' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime/support_code.rb:117:incall' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime/support_code.rb:117:in around' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime.rb:91:inaround' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime.rb:78:in with_hooks' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/scenario.rb:53:inaccept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/scenario.rb:108:in with_visitor' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/scenario.rb:47:inaccept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:51:in visit_feature_element' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:163:inbroadcast' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:50:in visit_feature_element' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/feature.rb:43:inaccept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/feature.rb:42:in each' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/feature.rb:42:inaccept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:20:in visit_feature' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:163:inbroadcast' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:19:in visit_feature' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/features.rb:29:inaccept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/features.rb:17:in each' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/features.rb:17:ineach' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/features.rb:28:in accept' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:14:invisit_features' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:163:in broadcast' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/ast/tree_walker.rb:13:invisit_features' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/runtime.rb:46:in run!' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/cli/main.rb:43:inexecute!' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/../lib/cucumber/cli/main.rb:20:in execute' /var/lib/gems/1.8/gems/cucumber-1.2.1/bin/cucumber:14 /usr/local/bin/cucumber:19:inload' /usr/local/bin/cucumber:19 please help me!