Redmine › Extended Profile

Remove Author plugin then work well.
and all profile value are configured.
facebook value is xyz37

Logs are below.

ActionView::TemplateError (undefined method `match' for nil:NilClass) on line #28 of vendor/plugins/extended_profile/app/views/extended_profile/_author.rhtml:
25:       <%= link_to(image_tag('blog.png', :plugin => 'extended_profile'), link) %>
26:     <% end %>
27:     <% if facebook %>
28:       <% link = facebook.value.match(%r{^[0-9]+$}) ? "http://www.facebook.com/profile.php?id=#{facebook.value}" : "http://www.facebook.com/#{facebook.value}" %>
29:       <%= link_to(image_tag('facebook.png', :plugin => 'extended_profile'), link) %>
30:     <% end %>
31:     <% if twitter %>

    vendor/plugins/extended_profile/app/views/extended_profile/_author.rhtml:28:in `_run_rhtml_vendor47plugins47extended_profile47app47views47extended_profile47_author46rhtml_locals_author_controller_count_object_project_request_user'
    lib/redmine/hook.rb:113:in `send'
    lib/redmine/hook.rb:113:in `view_sidebar_author_box_bottom'
    lib/redmine/hook.rb:63:in `send'
    lib/redmine/hook.rb:63:in `call_hook'
    lib/redmine/hook.rb:63:in `each'
    lib/redmine/hook.rb:63:in `call_hook'
    lib/redmine/hook.rb:60:in `tap'
    lib/redmine/hook.rb:60:in `call_hook'
    lib/redmine/hook.rb:144:in `call_hook'
    vendor/plugins/author/app/views/author/_profile.rhtml:17:in `_run_rhtml_vendor47plugins47author47app47views47author47_profile46rhtml_locals_controller_object_profile_project_request'
    vendor/plugins/author/app/views/author/_profile.rhtml:11:in `each'
    vendor/plugins/author/app/views/author/_profile.rhtml:11:in `_run_rhtml_vendor47plugins47author47app47views47author47_profile46rhtml_locals_controller_object_profile_project_request'
    lib/redmine/hook.rb:113:in `send'
    lib/redmine/hook.rb:113:in `view_layouts_base_sidebar'
    lib/redmine/hook.rb:63:in `send'
    lib/redmine/hook.rb:63:in `call_hook'
    lib/redmine/hook.rb:63:in `each'
    lib/redmine/hook.rb:63:in `call_hook'
    lib/redmine/hook.rb:60:in `tap'
    lib/redmine/hook.rb:60:in `call_hook'
    lib/redmine/hook.rb:144:in `call_hook'
    app/views/layouts/base.html.erb:64
    app/controllers/projects_controller.rb:168:in `show'
    config/initializers/mongrel.rb:62:in `dispatch_cgi'

Rendering D:/CI/Redmine/public/500.html (500 Internal Server Error)