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Error in redmine 0.9 stable Debian 5

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An error occurred on the page you were trying to access.
If you continue to experience problems please contact your redMine administrator for assistance.@

production.log
@Processing IssuesController#index (for 109.188.57.49 at 2010-07-18 16:58:25) [GET]
Parameters: {"project_id"=>"wabutil", "action"=>"index", "controller"=>"issues"}
Rendering template within layouts/base
Rendering issues/index.rhtml

ActionView::TemplateError (stack level too deep) on line #63 of app/views/queries/_filters.rhtml:
60: <tr>
61: <td>
62: <table>
63: <% query.available_filters.sort{|a,b| a¹[:order]<=>b¹[:order]}.each do |filter| >
64: < field = filter⁰
65: options = filter¹ >
66: <tr <= 'style="display:none;"' unless query.has_filter?(field) > id="tr_<= field %>" class="filter">

app/models/user.rb:147:in `inject'
    app/models/query.rb:207:in `available_filters'
    app/views/queries/_filters.rhtml:63:in `_run_rhtml_app47views47queries47_filters46rhtml_locals_filters_object_query'
    app/views/issues/index.rhtml:17:in `_run_rhtml_app47views47issues47index46rhtml'
    app/views/issues/index.rhtml:11:in `_run_rhtml_app47views47issues47index46rhtml'
    app/controllers/issues_controller.rb:78:in `index'
    app/controllers/issues_controller.rb:77:in `index'

Rendering /var/www/juglans/data/www/redmine.juglans.ru/public/500.html (500 Internal Server Error)

Processing IssuesController#index (for 109.188.57.49 at 2010-07-18 15:51:02) [GET]
Parameters: {"project_id"=>"servlife", "action"=>"index", "controller"=>"issues"}
Rendering template within layouts/base
Rendering issues/index.rhtml
Completed in 327ms (View: 139, DB: 169) | 200 OK [http://redmine.juglans.ru/projects/servlife/issues]@

@Processing IssuesController#show (for 109.188.57.49 at 2010-07-18 16:28:42) [GET]
Parameters: {"action"=>"show", "id"=>"12", "controller"=>"issues"}
Rendering template within layouts/base
Rendering issues/show.rhtml

ActionView::TemplateError (stack level too deep) on line #11 of app/views/issues/_attributes.rhtml:
8: <% end >
9:
10: <p><= f.select :priority_id, (@priorities.collect {|p| [p.name, p.id]}), :required => true ></p>
11: <p><= f.select :assigned_to_id, (@issue.assignable_users.collect {|m| [m.name, m.id]}), :include_blank => true ></p>
12: < unless @project.issue_categories.empty? >
13: <p><= f.select :category_id, (@project.issue_categories.collect {|c| [c.name, c.id]}), :include_blank => true >
14: <= prompt_to_remote(image_tag('add.png', :style => 'vertical-align: middle;'),

app/models/project.rb:373:in `assignable_users'
    app/models/issue.rb:285:in `assignable_users'
    app/views/issues/_attributes.rhtml:11:in `_run_rhtml_app47views47issues47_attributes46rhtml_locals_attributes_object'
    app/views/issues/_attributes.rhtml:1:in `_run_rhtml_app47views47issues47_attributes46rhtml_locals_attributes_object'
    app/views/issues/_form.rhtml:16:in `_run_rhtml_app47views47issues47_form46rhtml_locals_f_form_object'
    app/views/issues/_edit.rhtml:15:in `_run_rhtml_app47views47issues47_edit46rhtml_locals_edit_object'
    app/helpers/application_helper.rb:614:in `labelled_tabular_form_for'
    app/views/issues/_edit.rhtml:1:in `_run_rhtml_app47views47issues47_edit46rhtml_locals_edit_object'
    app/views/issues/show.rhtml:97:in `_run_rhtml_app47views47issues47show46rhtml'
    app/controllers/issues_controller.rb:117:in `show'
    app/controllers/issues_controller.rb:116:in `show'

Rendering /var/www/juglans/data/www/redmine.juglans.ru/public/500.html (500 Internal Server Error)@

help plz