<p>I have uriscan installed on my Win2003 server and it is blocking an older ColdFusion script.  The log entry has the following--</p>

<p>2008-09-19 00:16:57 66.82.162.13 1416208729 GET /Admin/Uploads/Mountain/Wolf%2520Creek%2520gazeebo.jpg Rejected URL+is+double+escaped URL - -</p>

<p>How do I get uriscan to allow submissions like this without turning off the double-escaped url feature?</p>

To quote another post on the subject,
some aspect of your process for
submitting URIs is doing some bad
encoding.
http://www.usenet-forums.com/archive/index.php/t-39111.html
I recommend changing the name of the JPG to not have spaces in it as a good practice, then later try to figure out with a non-production page why you're not interpreting the %20 as an encoded space, but as a percent sign and two digits.