Redmine

Hi,
due to security issues (see http://www.ruby-lang.org/en/news/2008/06/20/arbitrary-code-execution-vulnerabilities/ )
I upgraded the ruby-version to version "ruby 1.8.6 (2008-06-20 patchlevel 230) [i686-linux]".

After installing rubygems with the new version and resolving (afaik) all dependencies,
when trying to access the login-page, I get the following error:

ActionView::TemplateError (wrong argument type String (expected Proc)) on line #2 of account/login.rhtml:
1: <div id="login-form">
2: <% form_tag({:action=> "login"}) do >
3: <table>
4: <tr>
5: <td align="right"><label for="username"><=l(:field_login)%>:</label></td>

(eval):2:in `protect_against_forgery?'
    vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb:404:in `extra_tags_for_form'
    vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb:412:in `form_tag_html'
    vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb:418:in `form_tag_in_block'
    vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb:39:in `form_tag'
    app/views/account/login.rhtml:2:in `_run_erb_47app47views47account47login46rhtml'
    vendor/rails/actionpack/lib/action_view/base.rb:637:in `send'
    vendor/rails/actionpack/lib/action_view/base.rb:637:in `compile_and_render_template'
    vendor/rails/actionpack/lib/action_view/base.rb:365:in `render_template'
    vendor/rails/actionpack/lib/action_view/base.rb:316:in `render_file'
    vendor/rails/actionpack/lib/action_controller/base.rb:1100:in `render_for_file'
    vendor/rails/actionpack/lib/action_controller/base.rb:836:in `render_with_no_layout'
    vendor/rails/actionpack/lib/action_controller/layout.rb:262:in `render_without_benchmark'
    vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
    /usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure'
    vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
    vendor/rails/actionpack/lib/action_controller/base.rb:1153:in `default_render'
    vendor/rails/actionpack/lib/action_controller/base.rb:1159:in `perform_action_without_filters'
    vendor/rails/actionpack/lib/action_controller/filters.rb:697:in `call_filters'
    vendor/rails/actionpack/lib/action_controller/filters.rb:689:in `perform_action_without_benchmark'
    vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
    /usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure'
    vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
    vendor/rails/actionpack/lib/action_controller/rescue.rb:199:in `perform_action_without_caching'
    vendor/rails/actionpack/lib/action_controller/caching.rb:678:in `perform_action'
    vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
    vendor/rails/activerecord/lib/active_record/query_cache.rb:8:in `cache'
    vendor/rails/actionpack/lib/action_controller/caching.rb:677:in `perform_action'
    vendor/rails/actionpack/lib/action_controller/base.rb:524:in `send'
    vendor/rails/actionpack/lib/action_controller/base.rb:524:in `process_without_filters'
    vendor/rails/actionpack/lib/action_controller/filters.rb:685:in `process_without_session_management_support'
    vendor/rails/actionpack/lib/action_controller/session_management.rb:123:in `process'
    vendor/rails/actionpack/lib/action_controller/base.rb:388:in `process'
    vendor/rails/actionpack/lib/action_controller/dispatcher.rb:171:in `handle_request'
    vendor/rails/actionpack/lib/action_controller/dispatcher.rb:115:in `dispatch'
    vendor/rails/actionpack/lib/action_controller/dispatcher.rb:126:in `dispatch_cgi'
    vendor/rails/actionpack/lib/action_controller/dispatcher.rb:9:in `dispatch'
    vendor/rails/railties/lib/webrick_server.rb:112:in `handle_dispatch'
    vendor/rails/railties/lib/webrick_server.rb:78:in `service'
    /usr/local/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
    /usr/local/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
    /usr/local/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
    /usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
    /usr/local/lib/ruby/1.8/webrick/server.rb:95:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:92:in `each'
    /usr/local/lib/ruby/1.8/webrick/server.rb:92:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:23:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:82:in `start'
    vendor/rails/railties/lib/webrick_server.rb:62:in `dispatch'
    vendor/rails/railties/lib/commands/servers/webrick.rb:66
    /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
    /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
    vendor/rails/activesupport/lib/active_support/dependencies.rb:496:in `require'
    vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'
    vendor/rails/activesupport/lib/active_support/dependencies.rb:496:in `require'
    vendor/rails/railties/lib/commands/server.rb:39
    script/server:3:in `require'
    script/server:3

Rendering /home/redmine/redmine-0.7.2/public/500.html (500 Internal Server Error)

Does anybody have an idea how to resolve this?