Hi Kristen,
Thanks for your response to this issue. Unfortunately everything you suggested has not cleared up the problem. First of all I'm not really sure how to tell if I am adding variables that I'm not licensed for. The list you referenced has over 5000 variable associated with it. Also the variable that I'm using are variable that I have used before in creating .bds files which have worked without any issues or problems. I am creating the files the same way now that I have in the past using the same variables. In regards to the number of variables the only thing in the .bds files are a Block-group ID (associate the file to a Geographic base), a Baseline Pop Data (taken from the standard .bds files), and our own created Population Scenario. So there are only 3 total variables. Considering you can run Threshold Models when using there standard .bds data which covers the entire US and has probably over 50 variables to choose from, I don't see how my 3 variables would be too many.
Here is a screenshot of our .bds file.
[ATTACH=CONFIG]17676[/ATTACH]
One thing that really confuses me with the Threshold Trade Area Analysis is that when using our custom .bds files the analysis works (runs successfully with no error) when using the Standard Threshold Rings analysis methods yet does not work (give an error) when using the Threshold Drive Times analysis method. This makes me think that there is not an issue with our custom .bds files rather there is an issue when using custom .bds files while using the Drive Time method.
Thank you,
Phillip Schmutz