CF10 Internal Server Error 500 Remote Clients Only

We are running CF10 for an internal team application and we are currently migrating from Windows 2003 to Windows 2008.  On one of our pages, if I browse to the page from a remote web client, I am presented with a 500 - Internal Server Error.  However, if I browse to that same page from the localhost, the page partially renders and then I get an error about a missing custom template.  I know how to fix that problem but I'm wondering what I need to do so that the remote clients can also see the more helpful "Cannot find CFML template for custom tag" error rather then the generic 500 - Internal Server Error.  I tried removing all of the entries from the "IP Addresses for Debug Output" box but the behavior remained unchanged.

Jason