error log

deepak@deepak-laptop:~/tanhins $ rake RAILS_ENV=production radiant:extensions:database_mailer:migrate --trace
(in /home/deepak/tanhins)
** Invoke radiant:extensions:database_mailer:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
wrong number of arguments (3 for 2)
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/admin_ui.rb:115:in `initialize'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/admin_ui.rb:115:in `new'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/admin_ui.rb:115:in `nav_item'
/home/deepak/tanhins/vendor/extensions/database_mailer/database_mailer_extension.rb:22:in `activate'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/extension.rb:86:in `activate'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/actionpack/lib/action_controller/routing/route.rb:205:in `to_proc'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/extension_loader.rb:106:in `each'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/extension_loader.rb:106:in `activate_extensions'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/initializer.rb:201:in `after_initialize'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/railties/lib/initializer.rb:179:in `process'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/railties/lib/initializer.rb:113:in `send'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/railties/lib/initializer.rb:113:in `run'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/lib/radiant/initializer.rb:157:in `run'
/home/deepak/tanhins/config/environment.rb:12
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/activesupport/lib/active_support/dependencies.rb:521:in `new_constants_in'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
/usr/lib/ruby/gems/1.8/gems/radiant-0.9.1/vendor/rails/railties/lib/tasks/misc.rake:4
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequisites'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequisites'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31
/usr/bin/rake:19:in `load'
/usr/bin/rake:19