Actionview Template Error when sending actionmailer e-mail - Ruby on Rails

I'm getting an error anytime I try and send out an e-mail to users. The below is sent out every day at noon:

    <% @user.account开发者_如何学JAVA.ideas.each do |idea| %> #this is the line that errors
    <%= idea.title %>
    <% end %>

Here's the error:

    scheduler caught exception :
    ActionView::Template::Error
    /Library/Ruby/Gems/1.8/gems/activesupport- 3.0.7/lib/active_support/whiny_nil.rb:48:in     `method_missing'

I think it's something with the email not being able to interact with controllers... any thoughts? I'm lost. Thanks.

Judging by the fact that the warning comes out of whiny_nil.rb, I'm willing to bet that @user.account is returning nil rather than an actual Account object. Search through your database for users without an account, I reckon there's at least one.