Redmine

Hi there!

After installing the scrumbler plugin to support an agile project management methodology, when I try to create a new issue, its displayed the 500 error page. The error message which is being logged is the following one:

_Started GET "/redmine/projects/ubibanking/issues/new" for 213.228.152.158 at Wed Jul 04 10:36:48 +0000 2012
Processing by IssuesController#new as HTML
Parameters: {"project_id"=>"ubibanking"}
Rendered issues/_form_custom_fields.html.erb (152.6ms)
Rendered issues/_attributes.html.erb (192.2ms)
Rendered issues/_form.html.erb (222.6ms)
Rendered issues/new.html.erb within layouts/base (225.3ms)
Completed 500 Internal Server Error in 491ms

ActionView::Template::Error (uninitialized constant Scrumbler::Infectors::Issue::ScrumblerIssueCustomField):
1: <div class="splitcontent">
2: <div class="splitcontentleft">
3: <% i = 0 >
4: < split_on = (@issue.custom_field_values.size / 2.0).ceil - 1 >
5: < @issue.custom_field_values.each do |value| >
6: <p><= custom_field_tag_with_label :issue, value ></p>
7: < if i == split_on -%>
lib/plugins/acts_as_customizable/lib/acts_as_customizable.rb:86:in `custom_field_values'
app/views/issues/_form_custom_fields.html.erb:4:in `_app_views_issues__form_custom_fields_html_erb___843611656_70240862974140'
app/views/issues/_attributes.html.erb:65:in `_app_views_issues__attributes_html_erb___699821725_70240861184520'
app/helpers/application_helper.rb:957:in `labelled_fields_for'
app/views/issues/_attributes.html.erb:1:in `_app_views_issues__attributes_html_erb___699821725_70240861184520'
app/views/issues/_form.html.erb:44:in `_app_views_issues__form_html_erb__127799731_70240861448300'
app/helpers/application_helper.rb:957:in `labelled_fields_for'
app/views/issues/_form.html.erb:1:in `_app_views_issues__form_html_erb__127799731_70240861448300'
app/views/issues/new.html.erb:11:in `_app_views_issues_new_html_erb__1078529006_70240861609940'
app/helpers/application_helper.rb:950:in `labelled_form_for'
app/views/issues/new.html.erb:5:in `_app_views_issues_new_html_erb__1078529006_70240861609940'
app/controllers/issues_controller.rb:130:in `new'
app/controllers/issues_controller.rb:129:in `new'_

Since I'm not familiar with the rails framework, its hard to despite the error cause.
Can anyone give me some help?

Thanks in advance,
Best regards!