Redmine

Hello!

I got this error. What can I do?
redmine-1.4, sqllite3

_
Processing IssuesController#index (for 91.135.149.102 at 2012-06-05 09:37:20) [GET]
Parameters: {"controller"=>"issues", "project_id"=>"news", "action"=>"index"}

NoMethodError (undefined method `issue_group_assignment?' for #<Class:0x2c74f6e0>):
app/models/query.rb:266:in `available_filters'
app/helpers/queries_helper.rb:124:in `build_query_from_params'
app/helpers/queries_helper.rb:92:in `retrieve_query'
app/controllers/issues_controller.rb:57:in `index'
passenger (3.0.12) lib/phusion_passenger/rack/request_handler.rb:96:in `process_request'
passenger (3.0.12) lib/phusion_passenger/abstract_request_handler.rb:513:in `accept_and_process_next_request'
passenger (3.0.12) lib/phusion_passenger/abstract_request_handler.rb:274:in `main_loop'
passenger (3.0.12) lib/phusion_passenger/classic_rails/application_spawner.rb:321:in `start_request_handler'
passenger (3.0.12) lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `send'
passenger (3.0.12) lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `handle_spawn_application'
passenger (3.0.12) lib/phusion_passenger/utils.rb:479:in `safe_fork'
passenger (3.0.12) lib/phusion_passenger/classic_rails/application_spawner.rb:270:in `handle_spawn_application'
passenger (3.0.12) lib/phusion_passenger/abstract_server.rb:357:in `__send__'
passenger (3.0.12) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
passenger (3.0.12) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
passenger (3.0.12) lib/phusion_passenger/abstract_server.rb:180:in `start'
passenger (3.0.12) lib/phusion_passenger/classic_rails/application_spawner.rb:149:in `start'
passenger (3.0.12) lib/phusion_passenger/spawn_manager.rb:219:in `spawn_rails_application'
passenger (3.0.12) lib/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add'
passenger (3.0.12) lib/phusion_passenger/spawn_manager.rb:214:in `spawn_rails_application'
passenger (3.0.12) lib/phusion_passenger/abstract_server_collection.rb:82:in `synchronize'
passenger (3.0.12) lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
passenger (3.0.12) lib/phusion_passenger/spawn_manager.rb:213:in `spawn_rails_application'
passenger (3.0.12) lib/phusion_passenger/spawn_manager.rb:132:in `spawn_application'
passenger (3.0.12) lib/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application'
passenger (3.0.12) lib/phusion_passenger/abstract_server.rb:357:in `__send__'
passenger (3.0.12) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
passenger (3.0.12) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
passenger (3.0.12) /helper-scripts/passenger-spawn-server:99

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