[Map component works fine in iReports not so much in servlet]

I have a java servlet that happily produces all kinds of jasper reports including reports with images. I may just be a little out of touch, not having used jasper reports since 2003. But the map component has me stumped.

I generally use iReport Designer to build reports and then just plop the .jrxml into a directory within my webapp. All reports, again, rendering fine in both worlds; iReport Designer and my webapp. Only when using the map component do I not get anything rendered in the webapp. No exceptions. The jrxml compiles into .jasper. Just a blank web page. Gotta be missing a jar? Thanks in advance for any help.

<?xml version="1.0" encoding="UTF-8"?><jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports"              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"              xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd"               name="ThreatLocations"              language="groovy"              pageWidth="842"              pageHeight="595"              orientation="Landscape"              columnWidth="802"              leftMargin="20"              rightMargin="20"              topMargin="20"              bottomMargin="20"              uuid="a91c9cc5-2833-4b84-bb1c-c4bac23e3901">    <property name="ireport.zoom" value="1.0"/>    <property name="ireport.x" value="0"/>    <property name="ireport.y" value="0"/>    <queryString language="SQL">        <![CDATA[select distinct(vg_threat.ip_address) as ip, gc_geo_loc.latitude, gc_geo_loc.longitude from vg_threat join gc_geo_loc on vg_threat.geo_id=gc_geo_loc.geo_id;]]>    </queryString>    <field name="ip" class="java.lang.String"/>    <field name="latitude" class="java.lang.Float">        <fieldDescription><![CDATA[]]></fieldDescription>    </field>    <field name="longitude" class="java.lang.Float">        <fieldDescription><![CDATA[]]></fieldDescription>    </field>    <background>        <band splitType="Stretch"/>    </background>    <summary>        <band height="400">            <componentElement>                <reportElement uuid="cfe61f90-68c0-4e10-b55c-5a4142c7b382" x="0" y="0" width="802" height="400"/>                <mp:map xmlns:mp="http://jasperreports.sourceforge.net/jasperreports/components"                        xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">                    <mp:latitudeExpression><![CDATA[$F{latitude}]]></mp:latitudeExpression>                    <mp:longitudeExpression><![CDATA[$F{longitude}]]></mp:longitudeExpression>                    <mp:zoomExpression><![CDATA[2]]></mp:zoomExpression>                    <mp:markerData>                        <mp:item>                            <mp:itemProperty name="latitude">                                <valueExpression><![CDATA[$F{latitude}]]></valueExpression>                            </mp:itemProperty>                            <mp:itemProperty name="longitude">                                <valueExpression><![CDATA[$F{longitude}]]></valueExpression>                            </mp:itemProperty>                        </mp:item>                    </mp:markerData>                </mp:map>            </componentElement>        </band>    </summary></jasperReport>[/code]