Redmine

Hi

I have migrated my Redmine 1.0.2 to 1.2.1. Everything was good and the migrate DB generated no error or warming,
For the testing purpose i ran the redmine in webrick
The login page appear and I can login, but the next page got a 500.html error with the folling log.

Please help me its urgent

Thanks
Shahul

ERROR LOG IS:

ActionView::TemplateError (can't convert Fixnum into String) on line #43 of app/views/layouts/base.rhtml:
40:         <%= link_to l(:label_search), {:controller => 'search', :action => 'index', :id => @project}, :accesskey => accesskey(:search) %>:
41:         <%= text_field_tag 'q', @question, :size => 20, :class => 'small', :accesskey => accesskey(:quick_search) %>
42:         <% end %>
43:         <%= render_project_jump_box %>
44:     </div>
45:     <% end %>
46:     

    app/helpers/application_helper.rb:233:in `render_project_jump_box'
    app/helpers/application_helper.rb:250:in `project_tree_options_for_select'
    app/models/project.rb:664:in `project_tree'
    app/models/project.rb:660:in `each'
    app/models/project.rb:660:in `project_tree'
    app/helpers/application_helper.rb:260:in `project_tree'
    app/helpers/application_helper.rb:242:in `project_tree_options_for_select'
    app/helpers/application_helper.rb:232:in `render_project_jump_box'
    app/views/layouts/base.rhtml:43:in `_run_rhtml_app47views47layouts47base46rhtml'
    /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
    /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
    /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
    /usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
    /usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
    /usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
    /usr/lib/ruby/1.8/webrick/server.rb:82:in `start'