Error in contact_us

/usr/local/lib/ruby/gems/1.8/gems/mint-0.0.7/lib/mint/core/nil.rb:13:in `method_missing'
(erb):42:in `source'
(erb):14:in `compile_code'
/usr/local/lib/ruby/gems/1.8/gems/mint-0.0.7/lib/mint/helper/render.rb:37:in `compile_code'
./app/controller/pages.rb:202:in `compile_snippet'
./app/controller/pages.rb:176:in `process_content'
./app/controller/pages.rb:172:in `replace_macros'
./app/controller/pages.rb:193:in `each'
./app/controller/pages.rb:193:in `replace_macros'
./app/controller/pages.rb:172:in `process_content'
./app/controller/pages.rb:163:in `loop'
./app/controller/pages.rb:163:in `process_content'
./app/controller/pages.rb:91:in `show'
./app/controller/pages.rb:105:in `visit'
/usr/local/lib/ruby/gems/1.8/gems/mint-0.0.7/lib/mint/start.rb:150:in `send'
/usr/local/lib/ruby/gems/1.8/gems/mint-0.0.7/lib/mint/start.rb:150
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `gem_original_require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `require'
/wapp/sites/activesite/index.ruby:9