Redmine

After upgrading from Redmine 2.3.3 > 2.5.0 I got problem with the Calendar. This always return error 500.

Internal error
An error occurred on the page you were trying to access.


I tried to rollback to 2.3.3 but now it doesn't work there either. Also tried out 2.4.4 to see if the problem also existed in this version and the same result.

When installing v2.5.0 there was some update in gems, and the question is if this is the problem with any of them, but I don't know what ?
(I followed the normal upgrade guide)

Here is some output from the log:

Processing by CalendarsController#show as HTML
Parameters: {"project_id"=>"tri"}
Current user: andreas (id=1)
Rendered queries/_filters.html.erb (15.3ms)
Rendered common/_calendar.html.erb (7.3ms)
Rendered plugins/advanced_roadmap/app/views/hooks/_milestones.html.erb (2.5ms)
Rendered plugins/redmine_contacts/app/views/contacts_issues/_contacts.html.erb (1.2ms)
Rendered issues/_sidebar.html.erb (122.0ms)
Rendered calendars/show.html.erb within layouts/base (267.5ms)
Rendered plugins/advanced_roadmap/app/views/hooks/_stylesheet.html.erb (0.5ms)
Rendered inline template (0.9ms)
Rendered inline template (0.9ms)
Completed 500 Internal Server Error in 569.7ms

NoMethodError (undefined method `merge_conditions' for #<Class:0x000000051b2128>):
activerecord (3.2.17) lib/active_record/dynamic_matchers.rb:55:in `method_missing'
plugins/advanced_roadmap/lib/advanced_roadmap/query_patch.rb:13:in `milestones'
plugins/advanced_roadmap/lib/advanced_roadmap/calendars_controller_patch.rb:17:in `add_milestones'
activesupport (3.2.17) lib/active_support/callbacks.rb:214:in `_conditional_callback_around_3519'
activesupport (3.2.17) lib/active_support/callbacks.rb:480:in `_run__4345267122056902547__process_action__669904251648856805__callbacks'
activesupport (3.2.17) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.17) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
activesupport (3.2.17) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.17) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (3.2.17) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (3.2.17) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
activesupport (3.2.17) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.17) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.17) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.17) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.2.17) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
activerecord (3.2.17) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (3.2.17) lib/abstract_controller/base.rb:121:in `process'
actionpack (3.2.17) lib/abstract_controller/rendering.rb:45:in `process'
actionpack (3.2.17) lib/action_controller/metal.rb:203:in `dispatch'
actionpack (3.2.17) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.2.17) lib/action_controller/metal.rb:246:in `block in action'
actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:36:in `call'
journey (1.0.4) lib/journey/router.rb:68:in `block in call'
journey (1.0.4) lib/journey/router.rb:56:in `each'
journey (1.0.4) lib/journey/router.rb:56:in `call'
actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:608:in `call'
rack-openid (1.4.2) lib/rack/openid.rb:98:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
rack (1.4.5) lib/rack/etag.rb:23:in `call'
rack (1.4.5) lib/rack/conditionalget.rb:25:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/head.rb:14:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/flash.rb:242:in `call'
rack (1.4.5) lib/rack/session/abstract/id.rb:210:in `context'
rack (1.4.5) lib/rack/session/abstract/id.rb:205:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/cookies.rb:341:in `call'
activerecord (3.2.17) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.17) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.17) lib/active_support/callbacks.rb:405:in `_run__4280240179621511900__call__2190029223078795292__callbacks'
activesupport (3.2.17) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.17) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.17) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.17) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.17) lib/rails/rack/logger.rb:32:in `call_app'
railties (3.2.17) lib/rails/rack/logger.rb:16:in `block in call'
activesupport (3.2.17) lib/active_support/tagged_logging.rb:22:in `tagged'
railties (3.2.17) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.5) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.5) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.17) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.5) lib/rack/lock.rb:15:in `call'
actionpack (3.2.17) lib/action_dispatch/middleware/static.rb:63:in `call'
rack-cache (1.2) lib/rack/cache/context.rb:136:in `forward'
rack-cache (1.2) lib/rack/cache/context.rb:245:in `fetch'
rack-cache (1.2) lib/rack/cache/context.rb:185:in `lookup'
rack-cache (1.2) lib/rack/cache/context.rb:66:in `call!'
rack-cache (1.2) lib/rack/cache/context.rb:51:in `call'
railties (3.2.17) lib/rails/engine.rb:484:in `call'
railties (3.2.17) lib/rails/application.rb:231:in `call'
railties (3.2.17) lib/rails/railtie/configurable.rb:30:in `method_missing'
passenger (4.0.20) lib/phusion_passenger/rack/thread_handler_extension.rb:77:in `process_request'
passenger (4.0.20) lib/phusion_passenger/request_handler/thread_handler.rb:140:in `accept_and_process_next_request'
passenger (4.0.20) lib/phusion_passenger/request_handler/thread_handler.rb:108:in `main_loop'
passenger (4.0.20) lib/phusion_passenger/request_handler.rb:441:in `block (3 levels) in start_threads'

Please advice what I should do.

Thanks in advance !