Welcome to the forum, merrittholmes.
Several questions come to mind:
What is the URL you are trying to spider?
Exactly how did go about trying to spider it? In other words, was it a single URL you were trying to add to your index, or just something you think should have been indexed?
Do you have any robots exclusion that would prevent it from being indexed?
Do you have phpdig setup so that you can only re-spider every 7 day, for example?
Answers to these questions might clear up the mystery.