Rails - Feb 2008 - Stumped on silly nil object but debug shows it is not nil

<%= faq.faqcats[:title]  -%> in view  kills it with this error:

"You have a nil object when you didn''t expect it!
You might have expected an instance of ActiveRecord::Base.
The error occurred while evaluating nil.[]"

Extracted source (around line #16)

16: <%= faq.faqcats[:title]  -%>


===scenario==

I am using :include => [:faqcats, :modes],  in my controller find
request

in my view:  <%= debug(faq) -%>  prints

===============--- !ruby/object:Faq
attributes:
  answer: I hope someone has an answer so I can move-on
  weight: "0"
  faqcat_id: "2"
  markdown: "1"
  mode_id: "4"
  id: "13"
  question: Why can''t I grab Faqcat title
  created: 2007-11-20 10:19:00
  updated: 2007-11-20 10:19:00
attributes_cache: {}

faqcats: !ruby/object:Faqcat
  attributes:
    title: Trouble Shooting
    weight: "0"
    mode_id: "0"
    id: "2"
    parent_id: "0"
  attributes_cache: {}

modes: !ruby/object:Mode
  attributes:
    title: "on"
    id: "4"
  attributes_cache: {}
===============
<%= faq.modes[:title]  -%>  prints "on" as expected
<%= faq.faqcats[:title]  -%>  kills it

The only thing diffrent about the class Faqcat < ActiveRecord::Base
is that it is ''acts_as_tree''


Any help would be great.
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Like I said silly.  I ended up having a Faqs with the faqcat_id of
Faqcats that had been removed.
so some nil objects.  duhhh...  (I knew I forgot to finish something
in the admin the other day)

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