Redmine

Hi

I'm trying to translate redmine to Arabic and the yml syntax is good but I keep getting this error which is strange and I'm not expert in redmine

URL: http://smartdata.com.sa/pm/

undefined method `deep_symbolize_keys' for "تعليقات":String

Error message:
undefined method `deep_symbolize_keys' for "تعليقات":String
Exception class:
NoMethodError
Application root:
/home/smartdat/redmine/
Backtrace: # File Line Location
0 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/simple.rb 32 in `store_translations'
1 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/base.rb 158 in `load_file'
2 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/base.rb 158 in `each'
3 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/base.rb 158 in `load_file'
4 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/base.rb 15 in `load_translations'
5 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/base.rb 15 in `each'
6 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/base.rb 15 in `load_translations'
7 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/simple.rb 55 in `init_translations'
8 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/backend/simple.rb 38 in `available_locales'
9 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n/config.rb 39 in `available_locales'
10 /usr/lib/ruby/gems/1.8/gems/i18n-0.5.0/lib/i18n.rb 31 in `available_locales'
11 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 226 in `valid_locale?'
12 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 243 in `parse_extensions'
13 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 233 in `split'
14 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 118 in `initialize'
15 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 92 in `new'
16 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 92 in `create_template'
17 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 87 in `templates_in_path'
18 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 86 in `each'
19 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 86 in `templates_in_path'
20 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/template.rb 69 in `load!'
21 /home/smartdat/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb 173 in `to_proc'
22 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/paths.rb 40 in `each'
23 /home/smartdat/redmine/vendor/rails/actionpack/lib/action_view/paths.rb 40 in `load!'
24 /home/smartdat/redmine/vendor/rails/railties/lib/initializer.rb 402 in `load_view_paths'
25 /home/smartdat/redmine/vendor/rails/railties/lib/initializer.rb 194 in `process'
26 /home/smartdat/redmine/vendor/rails/railties/lib/initializer.rb 113 in `send'
27 /home/smartdat/redmine/vendor/rails/railties/lib/initializer.rb 113 in `run'
28 /home/smartdat/redmine/config/environment.rb 24
29 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb 29 in `gem_original_require'
30 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb 29 in `require'
31 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb 222 in `preload_application'
32 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb 181 in `initialize_server'
33 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/utils.rb 572 in `report_app_init_status'
34 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb 174 in `initialize_server'
35 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb 204 in `start_synchronously'
36 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb 180 in `start'
37 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb 149 in `start'
38 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb 219 in `spawn_rails_application'
39 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb 132 in `lookup_or_add'
40 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb 214 in `spawn_rails_application'
41 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb 82 in `synchronize'
42 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb 79 in `synchronize'
43 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb 213 in `spawn_rails_application'
44 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb 132 in `spawn_application'
45 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb 275 in `handle_spawn_application'
46 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb 357 in `__send__'
47 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb 357 in `server_main_loop'
48 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb 206 in `start_synchronously'
49 /usr/lib/ruby/gems/1.8/gems/passenger-3.0.9/helper-scripts/passenger-spawn-server 99