Redmine

Hi i've a found a Bug with the German Umlauts (ä,ü,ß). If the "Default language" or the Language-Settings under "My Account" is set to "German" and the Description of a Project contains a Umlaut i get this Message at the Webfrontend:

Internal error

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

and this at the Console:

Processing ProjectsController#show (for 95.222.111.91 at 2010-03-30 18:17:26) [GET]
  Parameters: {"controller"=>"projects", "action"=>"show", "id"=>"videorobot"}
Rendering template within layouts/base
Rendering projects/show

ActionView::TemplateError (incompatible character encodings: UTF-8 and ASCII-8BIT) on line #11 of app/views/projects/show.rhtml:
8: 
9: <div class="splitcontentleft">
10:     <div class="wiki">
11:             <%= textilizable @project.description %>
12:     </div>
13:     <ul>
14:     <% unless @project.homepage.blank? %><li><%=l(:field_homepage)%>: <%= auto_link(h(@project.homepage)) %></li><% end %>

    app/views/projects/show.rhtml:11:in `_run_rhtml_app47views47projects47show46rhtml'
    app/controllers/projects_controller.rb:166:in `show'
    <internal:prelude>:8:in `synchronize'
    /usr/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
    /usr/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
    /usr/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'

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

This happens only if the Language Setting is "German", if it is "English" it works fine and the Umlauts are correct.

My Redmine Version is SVN Revision 3625 (affected is the Stable Version too)
Ruby Version: ruby 1.9.1p376 (2009-12-07 revision 26041) [i686-linux]