Redmine

Recently I created Custom Field named 'Project Reference Number' to project (list). During timelog export to csv I am receiving column name with 'translation missing: en.Project Reference Number'.
In issue #17424 Toshi MARUYAMA (thanks for a help!) pointed, that some plugin may cause the problem. Unfortunately I cannot determine which one.
Can anyone point which plugin cause described problem?
Thank you in advance.

Environment:

  Redmine version                2.3.3.stable
  Ruby version                   2.0.0-p247 (2013-06-27) [x86_64-linux]
  Rails version                  3.2.13
  Environment                    production
  Database adapter               Mysql2
Redmine plugins:
  redmine_backlogs               v1.0.5
  redmine_banner                 0.0.9
  redmine_code_review            0.6.3

Output from production.log:

Started GET "/time_entries/report?utf8=%E2%9C%93&criteria%5B%5D=cf_40&f%5B%5D=spent_on&op%5Bspent_on%5D=lm&f%5B%5D=&columns=month&criteria%5B%5D=user" for 123.456.789.012 at 2014-07-08 13:56:26 +0200
Processing by TimelogController#report as HTML
  Parameters: {"utf8"=>"✓", "criteria"=>["cf_40", "user"], "f"=>["spent_on", ""], "op"=>{"spent_on"=>"lm"}, "columns"=>"month"}
  Current user: ppawlowski (id=162)
  Rendered queries/_filters.html.erb (12.2ms)
  Rendered queries/_columns.html.erb (1.0ms)
  Rendered timelog/_date_range.html.erb (14.4ms)
  Rendered timelog/_report_criteria.html.erb (2.8ms)
  Rendered timelog/_report_criteria.html.erb (5.9ms)
  Rendered timelog/_report_criteria.html.erb (2.2ms)
  Rendered timelog/_report_criteria.html.erb (5.8ms)
  Rendered timelog/_report_criteria.html.erb (3.5ms)
  Rendered timelog/_report_criteria.html.erb (6.8ms)
  Rendered timelog/_report_criteria.html.erb (4.6ms)
  Rendered timelog/_report_criteria.html.erb (3.6ms)
  Rendered timelog/_report_criteria.html.erb (4.7ms)
  Rendered timelog/_report_criteria.html.erb (1.8ms)
  Rendered timelog/_report_criteria.html.erb (66.7ms)
  Rendered timelog/_report_criteria.html.erb (22.7ms)
  Rendered timelog/_report_criteria.html.erb (3.0ms)
  Rendered timelog/_report_criteria.html.erb (1.4ms)
  Rendered timelog/_report_criteria.html.erb (2.5ms)
  Rendered timelog/_report_criteria.html.erb (2.9ms)
  Rendered timelog/_report_criteria.html.erb (2.6ms)
  Rendered timelog/_report_criteria.html.erb (1.3ms)
  Rendered timelog/_report_criteria.html.erb (1.1ms)
  Rendered timelog/_report_criteria.html.erb (5.3ms)
  Rendered timelog/_report_criteria.html.erb (3.0ms)
  Rendered timelog/_report_criteria.html.erb (2.1ms)
  Rendered timelog/_report_criteria.html.erb (170.6ms)
  Rendered timelog/report.html.erb within layouts/base (188.8ms)
  Rendered plugins/redmine_code_review/app/views/code_review/_html_header.html.erb (0.0ms)
  Rendered plugins/redmine_backlogs/app/views/hooks/_rb_include_scripts.html.erb (1.8ms)
  Rendered plugins/redmine_banner/app/views/banner/_project_body_bottom.html.erb (0.0ms)
  Rendered plugins/redmine_code_review/app/views/code_review/_body_bottom.html.erb (0.0ms)
Completed 200 OK in 560ms (Views: 220.6ms | ActiveRecord: 279.2ms)
Started GET "/rb/server_variables.js" for 188.252.65.162 at 2014-07-08 13:56:27 +0200
Processing by RbServerVariablesController#index as JS
  Current user: ppawlowski (id=162)
DEPRECATION WARNING: Passing a template handler in the template name is deprecated. You can simply remove the handler name or pass render :handlers => [:erb] instead. (called from realtime at /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/benchmark.rb:296)
  Rendered plugins/redmine_backlogs/app/views/rb_server_variables/show.js.erb (1.9ms)
Completed 200 OK in 4ms (Views: 2.4ms | ActiveRecord: 0.3ms)
Started GET "/time_entries/report.csv?columns=month&criteria%5B%5D=cf_40&criteria%5B%5D=user&f%5B%5D=spent_on&f%5B%5D=&op%5Bspent_on%5D=lm&utf8=%E2%9C%93" for 123.456.789.012 at 2014-07-08 13:56:35 +0200
Processing by TimelogController#report as CSV
  Parameters: {"columns"=>"month", "criteria"=>["cf_40", "user"], "f"=>["spent_on", ""], "op"=>{"spent_on"=>"lm"}, "utf8"=>"✓"}
  Current user: ppawlowski (id=162)
  Rendered text template (0.0ms)
Sent data timelog.csv (0.6ms)
Completed 200 OK in 298ms (Views: 0.5ms | ActiveRecord: 158.1ms)