can anyone spot errors in this code?

<cfcontent type="text/vnd.wap.wml"><?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">


<!--- get further details on the vehicle using id --->
<cfquery name="listdetails" datasource="#dsn#">
SELECT *
FROM stock
WHERE id = #url.id#
</cfquery>

<!--- get current highest bid --->
<cfquery name="gethighbid" datasource="#dsn#">
SELECT max(highBid) as highbidn
FROM bids
WHERE id = #url.id#
</cfquery>

<!--- bonus stuff: get username of highest current bid --->
<cfquery name="gethighbiduser" datasource="#dsn#">
SELECT userID
FROM bids
WHERE highBid = #gethighbid.highbidn#
</cfquery>


<wml>




<!--- This card displays more information on the product and
a link to the bids page --->
<card id="placebid" title="Car Details">

<cfoutput query="listdetails">
<p>Car ID: #id#<br/>
Make: #makeID#<br/>
Model: #modelID#<br/>
Variant: #variant#<br/>
Body Style: #bodyStyleID#<br/>
Colour: #colour#<br/>
Year: #year#<br/>
Reg: #reg#<br/>
Miles: #miles#<br/>
Owners: #owners#<br/>
</p>

</cfoutput>

<cfoutput query="gethighbid"><p>Current High Bid: #highbidn#<br/></p></cfoutput>
<cfoutput query="gethighbiduser"><p>Current High Bidder: #userID#<br/></p></cfoutput>

<p><a href="#enterbid">Place Bid</a></p>


</card>


<!--- The user enters their maximum bid --->
<card id="enterbid" title="Enter Bid">
<p>Please enter your max bid amount below:<br/>
<input type="text" title="Enter Max Bid" name="maxbid" format="*N"/><br/>
<!--- The maxbid and car id values are passed onto bidconfirm.cfm --->
<a href="bidconfirm.cfm?bid=$(maxbid)&id=<cfoutput query="listdetails">#id#</cfoutput>">Continue</a></p>
</card>


</wml>


I swear this page was working fine, and then suddenly one day it stopped working and I get an unexpected server error. Can anyone see if there are any syntax errors? I just dont understand what the hell happened!