Redmine

All,

Whenever I click on "My Account" in redmine page, it is throwing the following error (in production.log).

ActionView::Template::Error (undefined method `subscribe_to_reminder' for #<UserPreference:0x0000000742abd8>):
2: <legend><%=l(:redmine_reminder_account_settings_title)%></legend>
3: <div class="tabular">
4: <%= labelled_fields_for :pref, @user.pref do |pref_fields| >
5: <p><= pref_fields.check_box :subscribe_to_reminder ></p>
6: <p><= pref_fields.text_field :custom_reminder_period_days, :size=> 2, :placeholder => 7 ></p>
7: < end %>
8: </div>

My redmine info is as below

Environment:
Redmine version 2.5.1.stable
Ruby version 1.9.2-p320 (2012-04-20) [x86_64-linux]
Rails version 3.2.17
Environment production
Database adapter Mysql2
SCM:
Subversion 1.6.17
Cvs 1.12.12
Filesystem
Redmine plugins:
redmine_auto_watchers_from_groups 0.0.2
redmine_banner 0.0.8
redmine_graphs 0.1.0
redmine_logs 0.0.5
redmine_maintenance_mode 1.1.0
redmine_reminder 0.3.1

Can anyone help me on how to resolve this ?

Thanks & Regards,
Arumugam