Redmine

Hey Guys

When i click on a username anywhere in my redmine installation i get the following error:
Processing UsersController#show (for 192.168.1.25 at 2011-02-10 15:08:02) [GET]
Parameters: {"action"=>"show", "id"=>"10", "controller"=>"users"}

NameError (uninitialized constant Asset):
lib/redmine/activity/fetcher.rb:25
lib/redmine/activity/fetcher.rb:25:in `collect'
lib/redmine/activity/fetcher.rb:25
lib/redmine/activity/fetcher.rb:91:in `call'
lib/redmine/activity/fetcher.rb:91:in `default'
lib/redmine/activity/fetcher.rb:91:in `[]'
lib/redmine/activity/fetcher.rb:91:in `constantized_providers'
lib/redmine/activity/fetcher.rb:75:in `events'
lib/redmine/activity/fetcher.rb:74:in `each'
lib/redmine/activity/fetcher.rb:74:in `events'
app/controllers/users_controller.rb:59:in `show'
/usr/lib/ruby/1.8/thread.rb:135:in `synchronize'
thin (1.2.7) lib/thin/connection.rb:76:in `pre_process'
thin (1.2.7) lib/thin/connection.rb:74:in `catch'
thin (1.2.7) lib/thin/connection.rb:74:in `pre_process'
thin (1.2.7) lib/thin/connection.rb:57:in `process'
thin (1.2.7) lib/thin/connection.rb:42:in `receive_data'
eventmachine (0.12.10) lib/eventmachine.rb:256:in `run_machine'
eventmachine (0.12.10) lib/eventmachine.rb:256:in `run'
thin (1.2.7) lib/thin/backends/base.rb:57:in `start'
thin (1.2.7) lib/thin/server.rb:156:in `start'
thin (1.2.7) lib/thin/controllers/controller.rb:80:in `start'
thin (1.2.7) lib/thin/runner.rb:177:in `send'
thin (1.2.7) lib/thin/runner.rb:177:in `run_command'
thin (1.2.7) lib/thin/runner.rb:143:in `run!'
thin (1.2.7) bin/thin:6
/usr/bin/thin:19:in `load'
/usr/bin/thin:19

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

Redmine Info:
RAILS_ENV=production script/about
About your application's environment
Ruby version 1.8.5 (i386-linux)
RubyGems version 1.3.1
Rack version 1.0
Rails version 2.3.5
Active Record version 2.3.5
Active Resource version 2.3.5
Action Mailer version 2.3.5
Active Support version 2.3.5
Edge Rails revision unknown
Application root /opt/redmine
Environment production
Database adapter mysql
Database schema version 20100819172912

About your Redmine plugins
Redmine Schedules plugin 0.4.2
Advanced roadmap & milestones plugin 0.3.0
Mylyn Connector plugin 2.7.0.stable.RC5
Redmine Assets plugin 0.0.1