Redmine

ArgumentError (comparison of Date with nil failed):
app/models/issue.rb:763:in `recalculate_attributes_for'

Line source:tags/1.1.3/app/models/issue.rb#L763 is not #recalculate_attributes_for but #update_versions, your issue.rb is not a raw 1.1.3 one.

Actually we have loaded also this patch: gantt_edit_5_v1-1-1.patch

We loaded it because of our problems, do we have to unload it or load a differente one ?

Thanks

Could you try without the patch, please ?

I unloaded the patch and the errors changed. Here the trace:

Processing IssuesController#update (for 10.17.XX.XX at 2011-05-18 12:18:33) [PUT]
Parameters: {"time_entry"=>{"comments"=>"", "activity_id"=>"", "hours"=>""}, "commit"=>"Submit", "notes"=>"", "action"=>"update", "_method"=>"put", "authenticity_token"=>"y35sn5ssFZIF8uSHjfbB4+NJeLqrHUndXkgAIdyafts=", "id"=>"147", "issue"=>{"start_date"=>"2011-05-18", "estimated_hours"=>"9", "priority_id"=>"4", "parent_issue_id"=>"145", "lock_version"=>"1", "done_ratio"=>"0", "assigned_to_id"=>"", "subject"=>"uno.due", "tracker_id"=>"1", "due_date"=>"2011-05-19", "status_id"=>"1", "description"=>""}, "controller"=>"issues", "attachments"=>{"1"=>{"description"=>""}}}

NoMethodError (undefined method `<=>' for nil:NilClass):
app/models/issue.rb:553:in `save_issue_with_child_records'
app/models/issue.rb:535:in `save_issue_with_child_records'
app/controllers/issues_controller.rb:170:in `update'
/usr/lib/ruby/1.8/phusion_passenger/rack/request_handler.rb:92:in `process_request'
/usr/lib/ruby/1.8/phusion_passenger/abstract_request_handler.rb:207:in `main_loop'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:418:in `start_request_handler'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:358:in `handle_spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/utils.rb:184:in `safe_fork'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:354:in `handle_spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `__send__'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `main_loop'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:196:in `start_synchronously'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:163:in `start'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:213:in `start'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:262:in `spawn_rails_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server_collection.rb:126:in `lookup_or_add'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:256:in `spawn_rails_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server_collection.rb:80:in `synchronize'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:255:in `spawn_rails_application'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:154:in `spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:287:in `handle_spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `__send__'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `main_loop'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:196:in `start_synchronously'
/usr/lib/phusion_passenger/passenger-spawn-server:61

Rendering /usr/share/redmine/public/500.html (500 Internal Server Error)

Parameters: {"commit"=>"Create", "project_id"=>"piertest", "action"=>"create", "authenticity_token"=>"y35sn5ssFZIF8uSHjfbB4+NJeLqrHUndXkgAIdyafts=", "issue"=>{"start_date"=>"2011-05-18", "estimated_hours"=>"", "priority_id"=>"4", "parent_issue_id"=>"145", "done_ratio"=>"0", "assigned_to_id"=>"", "subject"=>"due.uno", "tracker_id"=>"1", "due_date"=>"2011-05-20", "status_id"=>"1", "description"=>""}, "controller"=>"issues", "attachments"=>{"1"=>{"description"=>""}}}
Sending email notification to:

ArgumentError (comparison of Array with Array failed):
app/models/issue.rb:753:in `recalculate_attributes_for'
app/models/issue.rb:717:in `update_parent_attributes'
app/controllers/issues_controller.rb:135:in `create'
/usr/lib/ruby/1.8/phusion_passenger/rack/request_handler.rb:92:in `process_request'
/usr/lib/ruby/1.8/phusion_passenger/abstract_request_handler.rb:207:in `main_loop'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:418:in `start_request_handler'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:358:in `handle_spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/utils.rb:184:in `safe_fork'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:354:in `handle_spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `__send__'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `main_loop'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:196:in `start_synchronously'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:163:in `start'
/usr/lib/ruby/1.8/phusion_passenger/railz/application_spawner.rb:213:in `start'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:262:in `spawn_rails_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server_collection.rb:126:in `lookup_or_add'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:256:in `spawn_rails_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server_collection.rb:80:in `synchronize'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:255:in `spawn_rails_application'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:154:in `spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/spawn_manager.rb:287:in `handle_spawn_application'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `__send__'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:352:in `main_loop'
/usr/lib/ruby/1.8/phusion_passenger/abstract_server.rb:196:in `start_synchronously'
/usr/lib/phusion_passenger/passenger-spawn-server:61

Rendering /usr/share/redmine/public/500.html (500 Internal Server Error)

A similar problem here (RM 1.1.3 with Postgres); can't create subtasks.

Processing IssuesController#create (for 192.168.2.39 at 2011-05-27 13:03:28) [POST]
  Parameters: {"commit"=>"Create", "project_id"=>"myproject", "action"=>"create", "authenticity_token"=>"12345", "issue"=>{"start_date"=>"2011-05-27", "estimated_hours"=>"", "priority_id"=>"4", "parent_issue_id"=>"772", "fixed_version_id"=>"", "done_ratio"=>"0", "assigned_to_id"=>"21", "subject"=>"Attempt to add subtask", "category_id"=>"2", "tracker_id"=>"1", "due_date"=>"", "status_id"=>"2", "description"=>"see this other task"}, "controller"=>"issues", "attachments"=>{"1"=>{"description"=>""}}, "watcher_multiple_group"=>"20,19,9,16,12,11,7,21,3"}

Sending email notification to:

NoMethodError (undefined method `<=>' for nil:NilClass):
  app/models/issue.rb:753:in `recalculate_attributes_for'
  app/models/issue.rb:717:in `update_parent_attributes'
  app/controllers/issues_controller.rb:135:in `create'
  passenger (3.0.7) lib/phusion_passenger/rack/request_handler.rb:96:in `process_request'
  passenger (3.0.7) lib/phusion_passenger/abstract_request_handler.rb:513:in `accept_and_process_next_request'
  passenger (3.0.7) lib/phusion_passenger/abstract_request_handler.rb:274:in `main_loop'
  passenger (3.0.7) lib/phusion_passenger/classic_rails/application_spawner.rb:321:in `start_request_handler'
  passenger (3.0.7) lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `send'
  passenger (3.0.7) lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `handle_spawn_application'
  passenger (3.0.7) lib/phusion_passenger/utils.rb:479:in `safe_fork'
  passenger (3.0.7) lib/phusion_passenger/classic_rails/application_spawner.rb:270:in `handle_spawn_application'
  passenger (3.0.7) lib/phusion_passenger/abstract_server.rb:357:in `__send__'
  passenger (3.0.7) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
  passenger (3.0.7) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
  passenger (3.0.7) lib/phusion_passenger/abstract_server.rb:180:in `start'
  passenger (3.0.7) lib/phusion_passenger/classic_rails/application_spawner.rb:149:in `start'
  passenger (3.0.7) lib/phusion_passenger/spawn_manager.rb:219:in `spawn_rails_application'
  passenger (3.0.7) lib/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add'
  passenger (3.0.7) lib/phusion_passenger/spawn_manager.rb:214:in `spawn_rails_application'
  passenger (3.0.7) lib/phusion_passenger/abstract_server_collection.rb:82:in `synchronize'
  passenger (3.0.7) lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
  passenger (3.0.7) lib/phusion_passenger/spawn_manager.rb:213:in `spawn_rails_application'
  passenger (3.0.7) lib/phusion_passenger/spawn_manager.rb:132:in `spawn_application'
  passenger (3.0.7) lib/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application'
  passenger (3.0.7) lib/phusion_passenger/abstract_server.rb:357:in `__send__'
  passenger (3.0.7) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
  passenger (3.0.7) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
  passenger (3.0.7) helper-scripts/passenger-spawn-server:99

Rendering /usr/local/www/redmine/public/500.html (500 Internal Server Error)

• Redmine: 1.2.0 Stable
• Ruby: 1.8.7
• Mysql

Processing IssuesController#destroy (for xxx at 2011-07-07 15:13:42) [POST]
  Parameters: {"action"=>"destroy", "authenticity_token"=>"8+4Y/Kg9Tpvvww8T5QdUv5lgEeDr1BRM5AXwhK5k0Do=", "id"=>"4", "controller"=>"issues"}

ArgumentError (comparison of Date with nil failed):
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/base.rb:2075:in `inject'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:178:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:178:in `evaluate_method'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:166:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:93:in `run'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:92:in `each'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:92:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:92:in `run'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:276:in `run_callbacks'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/callbacks.rb:344:in `callback_without_switch'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/callbacks.rb:251:in `create_or_update'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/base.rb:2577:in `save_without_validation'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/validations.rb:1090:in `save_without_dirty'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/dirty.rb:79:in `save_without_transactions'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:229:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:229:in `with_transaction_returning_status'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/database_statements.rb:136:in `transaction'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:182:in `transaction'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:228:in `with_transaction_returning_status'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:196:in `save'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:208:in `rollback_active_record_state!'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:196:in `save'
  app/models/issue.rb:801:in `recalculate_attributes_for'
  app/models/issue.rb:765:in `update_parent_attributes'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:178:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:178:in `evaluate_method'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:166:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:93:in `run'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:92:in `each'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:92:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:92:in `run'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/active_support/callbacks.rb:276:in `run_callbacks'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/callbacks.rb:344:in `callback_without_switch'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/callbacks.rb:338:in `destroy_without_transactions'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:229:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:229:in `with_transaction_returning_status'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/database_statements.rb:136:in `transaction'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:182:in `transaction'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:228:in `with_transaction_returning_status'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/transactions.rb:192:in `destroy'
  app/controllers/issues_controller.rb:245:in `destroy'
  app/controllers/issues_controller.rb:243:in `each'
  app/controllers/issues_controller.rb:243:in `destroy'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:1333:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:1333:in `perform_action_without_filters'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/filters.rb:617:in `call_filters'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/filters.rb:610:in `perform_action_without_benchmark'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/rescue.rb:160:in `perform_action_without_flash'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/flash.rb:151:in `perform_action'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:532:in `send'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:532:in `process_without_filters'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/filters.rb:606:in `process'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:391:in `process'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:386:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/routing/route_set.rb:438:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:87:in `dispatch'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:121:in `_call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:130:in `build_middleware_stack'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:29:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:29:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:9:in `cache'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:28:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/string_coercion.rb:25:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/params_parser.rb:15:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/session/cookie_store.rb:99:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/failsafe.rb:26:in `call'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:106:in `call'
  config/initializers/mongrel_cluster_with_rails_211_fix.rb:62:in `dispatch_cgi'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:101:in `dispatch_cgi'
  C:/Program Files (x86)/BitNami Redmine Stack/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:27:in `dispatch'

Rendering C:/Program Files (x86)/BitNami Redmine Stack/apps/redmine/public/500.html (500 Internal Server Error)

If anyone else has to maintain older redmine systems and experienced this bug:

I was able to mitigate that issue by placing this code in front of p.save in app/models/issue.rb:927:in `recalculate_attributes_for' (the line the issue appears, differs as my client is using 1.1.4):

      if p.start_date == nil
        p.start_date = p.created_on
      end

Explanation: As the child ticket is deleted, the parent tickets start date is newly calculated by checking for the earliest child tickets start date. If there are no other child tickets available the start date becomes nil and it fails to save the record. My mitigation strategy is to assign the creation date to the start date in case it becomes nil.