redmine 新建项目保存时出错

Started POST "/projects" for 124.134.52.190 at 2015-01-07 13:53:37 +0800
Processing by ProjectsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"Ul3OecVgk7CIEeuRjgY4CkJwfEs87lZLAtfcPE79+RQ=", "project"=>{"name"=>"bluemarkplatform", "description"=>"", "identifier"=>"bluemarkplatform", "homepage"=>"", "is_public"=>"1", "inherit_members"=>"0", "enabled_module_names"=>["issue_tracking", "time_tracking", "news", "documents", "files", "wiki", "repository", "boards", "calendar", "gantt", ""], "tracker_ids"=>["1", "2", "3", ""]}, "commit"=>"创建"}
  Current user: admin (id=1)
Redirected to http://zb.bluemark.cn:3000/projects/bluemarkplatform/settings
Expire fragment views/zb.bluemark.cn:3000/robots.txt 0.1ms
Completed 302 Found in 272.9ms (ActiveRecord: 225.5ms)
Started GET "/projects/bluemarkplatform/settings" for 124.134.52.190 at 2015-01-07 13:53:37 +0800
Processing by ProjectsController#settings as HTML
  Parameters: {"id"=>"bluemarkplatform"}
  Current user: admin (id=1)
  Rendered projects/_form.html.erb (12.9ms)
  Rendered projects/_edit.html.erb (14.3ms)
  Rendered projects/settings/_modules.html.erb (2.9ms)
  Rendered projects/settings/_members.html.erb (20.2ms)
  Rendered projects/settings/_versions.html.erb (2.6ms)
  Rendered common/_tabs.html.erb (43.8ms)
  Rendered projects/settings.html.erb within layouts/base (44.2ms)
Completed 500 Internal Server Error in 58.4ms

ActionView::Template::Error (undefined method `name' for nil:NilClass):
    33: <% end %>
    34: 
    35: <div class="contextual">
    36: <% if @project.versions.any? %>
    37:   <%= link_to l(:label_close_versions), close_completed_project_versions_path(@project), :method => :put %>
    38: <% end %>
    39: </div>
  app/views/projects/settings/_versions.html.erb:36:in `_app_views_projects_settings__versions_html_erb___2239517397735631269_16574600'
  app/views/common/_tabs.html.erb:22:in `block in _app_views_common__tabs_html_erb__147846800572085940_21340380'
  app/views/common/_tabs.html.erb:21:in `each'
  app/views/common/_tabs.html.erb:21:in `_app_views_common__tabs_html_erb__147846800572085940_21340380'
  app/helpers/application_helper.rb:328:in `render_tabs'
  app/views/projects/settings.html.erb:3:in `_app_views_projects_settings_html_erb__2163854291192367152_21364260'

redmine 版本号2.6.0
ruby 2.2.0

http://www.redmine.org/boards/2/topics/45039?r=45061#message-45061
在官网上发现这个解释

I had the same problem, uninstalling ruby 2.2 and installing 2.0 (also
installing gems again for 2.0) solved it for me.

正在测试

redmine 新建项目保存时出错

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