Asp.Net 3.5 failing to load Ajax

This is going to be another short and very to the point post. 

When installing Umbraco on my local development machine, I was unable to load WebResource.axd or ScriptResource.axd and asp.net ajax was dead in the water.  I found several forums describing the same problem with a myriad of potential fixes including web.config settings and repairing the dotnet framework 3.5 sp1. 

I finally decided that I should install the site from scratch and was successful in correcting the issue.  When I compared configuration, I found one setting that was incorrect in the original installation. 

I use directory urls for seo purposes so I set a wildcard mapping in IIS to allow asp.net to process all requests.  There is a checkbox to "verify that file exists".  Ensure that the checkbox is NOT checked.  If it is, then the above files will fail. 

Another several hours I cannot reclaim.  Dern.

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