Redmine

Started GET "/users/1" for 10.10.50.70 at Wed Sep 04 10:38:49 +0000 2013
Processing by UsersController#show as HTML
  Parameters: {"id"=>"1"}
  Current user: admin (id=1)
Completed 500 Internal Server Error in 49ms

NoMethodError (undefined method `<=>' for nil:NilClass):
  lib/redmine/activity/fetcher.rb:80:in `events'
  lib/redmine/activity/fetcher.rb:80:in `sort!'
  lib/redmine/activity/fetcher.rb:80:in `events'
  app/controllers/users_controller.rb:68:in `show'

This could be a regression from running migrate_from_trac.