Redmine

When I try to connect to project wiki index page or index by date he sends 500 and in logs:
Processing WikiController#special (for 192.168.100.3 at 2009-10-08 13:28:54) [GET]
Session ID: e46aa2c6e9e7466863526379f9262c8f
Parameters: {"action"=>"special", "id"=>"prm", "controller"=>"wiki", "page"=>"Page_index"}

NoMethodError (undefined method `to_date' for nil:NilClass):
/app/controllers/wiki_controller.rb:151:in `special'
/vendor/rails/activesupport/lib/active_support/core_ext/enumerable.rb:22:in `group_by'
/vendor/rails/activerecord/lib/active_record/base.rb:1364:in `inject'
/vendor/rails/activesupport/lib/active_support/core_ext/enumerable.rb:21:in `each'
/vendor/rails/activesupport/lib/active_support/core_ext/enumerable.rb:21:in `inject'
/vendor/rails/activesupport/lib/active_support/core_ext/enumerable.rb:21:in `group_by'
/app/controllers/wiki_controller.rb:151:in `special'
/vendor/rails/actionpack/lib/action_controller/base.rb:1166:in `send'
/vendor/rails/actionpack/lib/action_controller/base.rb:1166:in `perform_action_without_filters'
/vendor/rails/actionpack/lib/action_controller/filters.rb:579:in `call_filters'
/vendor/rails/actionpack/lib/action_controller/filters.rb:572: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:201:in `perform_action_without_caching'
/vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:13:in `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/sql_cache.rb:12:in `perform_action'
/vendor/rails/actionpack/lib/action_controller/base.rb:529:in `send'
/vendor/rails/actionpack/lib/action_controller/base.rb:529:in `process_without_filters'
/vendor/rails/actionpack/lib/action_controller/filters.rb:568:in `process_without_session_management_support'
/vendor/rails/actionpack/lib/action_controller/session_management.rb:130:in `process'
/vendor/rails/actionpack/lib/action_controller/base.rb:389:in `process'
/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:149:in `handle_request'
/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:107:in `dispatch'
/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:104:in `synchronize'
/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:104:in `dispatch'
/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:35:in `dispatch'
/usr/lib/ruby/1.8/mongrel/rails.rb:76:in `process'
/usr/lib/ruby/1.8/mongrel/rails.rb:74:in `synchronize'
/usr/lib/ruby/1.8/mongrel/rails.rb:74:in `process'
/usr/lib/ruby/1.8/mongrel.rb:159:in `process_client'
/usr/lib/ruby/1.8/mongrel.rb:158:in `each'
/usr/lib/ruby/1.8/mongrel.rb:158:in `process_client'
/usr/lib/ruby/1.8/mongrel.rb:285:in `run'
/usr/lib/ruby/1.8/mongrel.rb:285:in `initialize'
/usr/lib/ruby/1.8/mongrel.rb:285:in `new'
/usr/lib/ruby/1.8/mongrel.rb:285:in `run'
/usr/lib/ruby/1.8/mongrel.rb:268:in `initialize'
/usr/lib/ruby/1.8/mongrel.rb:268:in `new'
/usr/lib/ruby/1.8/mongrel.rb:268:in `run'
/usr/lib/ruby/1.8/mongrel/configurator.rb:282:in `run'
/usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `each'
/usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `run'
/usr/bin/mongrel_rails:129:in `run'
/usr/lib/ruby/1.8/mongrel/command.rb:212:in `run'
/usr/bin/mongrel_rails:282

Rendering /srv/redmine-0.8.0-tpsa/public/500.html (500 Internal Server Error)