Redmine

Hello,

I just upgraded to 2.3 and can't access any project's Settings tab anymore. I get this error:

ActionView::Template::Error (undefined method `inherit_members' for #<Project:0x7fa5a2f2a2e8>):
17: <% end >
18:
19: < if @project.safe_attribute? 'inherit_members' >
20: <p><= f.check_box :inherit_members ></p>
21: < end >
22:
23: <= wikitoolbar_for 'project_description' %>
lib/redmine/views/labelled_form_builder.rb:31:in `check_box'
app/views/projects/_form.html.erb:20:in `_app_views_projects__form_html_erb__611119149_70174691458280'
app/views/projects/_edit.html.erb:2:in `_app_views_projects__edit_html_erb___1355675442_70174691532840'
app/helpers/application_helper.rb:944:in `labelled_form_for'
app/views/projects/_edit.html.erb:1:in `_app_views_projects__edit_html_erb___1355675442_70174691532840'
app/views/common/_tabs.html.erb:24:in `_app_views_common__tabs_html_erb___144001353_70174692368340'
app/views/common/_tabs.html.erb:23:in `each'
app/views/common/_tabs.html.erb:23:in `_app_views_common__tabs_html_erb___144001353_70174692368340'
app/helpers/application_helper.rb:271:in `render_tabs'
app/views/projects/settings.html.erb:3:in `_app_views_projects_settings_html_erb___240808740_70174692672940'

I confirmed that the following is in app/models/project.rb:

"safe_attributes 'inherit_members',
:if => lambda {|project, user| project.parent.nil? || project.parent.visible?(user)}"

Absolutely no expert on RoR, any ideas of where to look at? Thanks!

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ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
RubyGems version 1.3.7
Rack version 1.5.2
Rails version 3.2.13