Redmine

When i click "New issue", "Documents", "Wiki" or "New file" in Files i receive this message;

"Internal error

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your redMine administrator for assistance.

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The log is;

ActionView::TemplateError (undefined method `number_to_human_size' for #<ActionView::Base:0xb676e538>) on line #8 of attachments/_form.rhtml:
5: </span>
6: <br />
7: <small><%= link_to l(:label_add_another_file), '#', :onclick => 'addFileField(); return false;' >
8: (<= l(:label_max_size) >: <= number_to_human_size(Setting.attachment_max_size.to_i.kilobytes) %>)
9: </small>

app/views/attachments/_form.rhtml:8:in `_run_erb_47app47views47attachments47_form46rhtml'
vendor/rails/actionpack/lib/action_view/base.rb:637:in `send'
vendor/rails/actionpack/lib/action_view/base.rb:637:in `compile_and_render_template'
vendor/rails/actionpack/lib/action_view/base.rb:365:in `render_template'
vendor/rails/actionpack/lib/action_view/base.rb:316:in `render_file'
vendor/rails/actionpack/lib/action_view/base.rb:331:in `render'
vendor/rails/actionpack/lib/action_view/partials.rb:120:in `render_partial'
vendor/rails/actionpack/lib/action_view/base.rb:352:in `render'
app/views/issues/_form.rhtml:48:in `_run_erb_47app47views47issues47_form46rhtml'
vendor/rails/actionpack/lib/action_view/base.rb:637:in `send'
vendor/rails/actionpack/lib/action_view/base.rb:637:in `compile_and_render_template'
vendor/rails/actionpack/lib/action_view/base.rb:365:in `render_template'
vendor/rails/actionpack/lib/action_view/base.rb:316:in `render_file'
vendor/rails/actionpack/lib/action_view/base.rb:331:in `render'
vendor/rails/actionpack/lib/action_view/partials.rb:120:in `render_partial'
vendor/rails/actionpack/lib/action_view/base.rb:352:in `render'
app/views/issues/new.rhtml:7:in `_run_erb_47app47views47issues47new46rhtml'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:248:in `fields_for'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:184:in `form_for'
app/helpers/application_helper.rb:434:in `labelled_tabular_form_for'
app/views/issues/new.rhtml:3:in `_run_erb_47app47views47issues47new46rhtml'
vendor/rails/actionpack/lib/action_view/base.rb:637:in `send'
vendor/rails/actionpack/lib/action_view/base.rb:637:in `compile_and_render_template'
vendor/rails/actionpack/lib/action_view/base.rb:365:in `render_template'
vendor/rails/actionpack/lib/action_view/base.rb:316:in `render_file'
vendor/rails/actionpack/lib/action_controller/base.rb:1100:in `render_for_file'
vendor/rails/actionpack/lib/action_controller/base.rb:914:in `render_with_no_layout'
vendor/rails/actionpack/lib/action_controller/layout.rb:262:in `render_without_benchmark'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
/usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
app/controllers/issues_controller.rb:157:in `new'
vendor/rails/actionpack/lib/action_controller/base.rb:1158:in `send'
vendor/rails/actionpack/lib/action_controller/base.rb:1158:in `perform_action_without_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:697:in `call_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:689:in `perform_action_without_benchmark'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
vendor/rails/actionpack/lib/action_controller/rescue.rb:199:in `perform_action_without_caching'
vendor/rails/actionpack/lib/action_controller/caching.rb:678:in `passenger_orig_perform_action'
vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
vendor/rails/activerecord/lib/active_record/query_cache.rb:8:in `cache'
vendor/rails/actionpack/lib/action_controller/caching.rb:677:in `passenger_orig_perform_action'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:53:in `perform_action'
vendor/rails/actionpack/lib/action_controller/base.rb:524:in `send'
vendor/rails/actionpack/lib/action_controller/base.rb:524:in `process_without_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:685:in `process_without_session_management_support'
vendor/rails/actionpack/lib/action_controller/session_management.rb:123:in `process'
vendor/rails/actionpack/lib/action_controller/base.rb:388:in `process'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:171:in `handle_request'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:115:in `dispatch'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:126:in `dispatch_cgi'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:9:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:38:in `process_request'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_request_handler.rb:163:in `main_loop'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:307:in `start_request_handler'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:276:in `handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in `safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:274:in `handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in `safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:273:in `handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `__send__'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `main_loop'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in `start_synchronously'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:135:in `start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in `fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in `start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:177:in `start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:218:in `spawn_rails_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in `spawn_rails_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:122:in `spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:247:in `handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `__send__'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `main_loop'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in `start_synchronously'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/bin/passenger-spawn-server:46

Rendering /home/mktvirtual1/rails_app/redmine/public/500.html (500 Internal Server Error)