Could not find the association

Hey peeps,

I have the following models:

class Profile < ActiveRecord::Base
has_many :tracks, :through => :watcher
has_many :watchers
end

class Watcher < ActiveRecord::Base
belongs_to :profile
belongs_to :watchable, :polymorphic => true
end

class Track < ActiveRecord::Base
has_many :watchers, :as => :watchable, :dependent => :destroy
has_many :profiles, :through => :watchers
end

To explain things a bit more, a Profile can upload a Track. Other
Profiles can Watch this Track for new Comments. This all is working
fine, except for when I try to do something with a track in my Profile
model.
For instance (a track actually belongs to a user, which has a profile):

def test
tracks.each do |t|
t.user.profile
end
end

Then I get the error: Could not find the association :watcher in model
Track

Anybody any idea what might be wrong? I’d be more than happy to share
more code.