JavaFX debian native packaging is broken on ubuntu 13.10 64-bit starting with b114. Using b113, or even using b114 and swapping in the b113 $JDK_HOME/lib/ant-javafx.jar, works fine. Here's the relevant snippet of our ant build script. Let me know if you need more info.

        <taskdef resource="com/sun/javafx/tools/ant/antlib.xml"
                 uri="javafx:com.sun.javafx.tools.ant"
                 classpath="${jdk.path}/lib/ant-javafx.jar:${dist.dir}/installer/assets"/>
        <fx:deploy nativeBundles="deb"
                   outdir="${dist.dir}/installer" verbose="true">
            <fx:application name="${prodname}" version="${release.number}.${build.number}"
                            mainClass="${main.class}"
                            toolkit="swing"/>
            <fx:platform>
                <fx:property name="javafx.verbose" value="true"/>
                <fx:jvmarg value="-Xmx1024m"/>
                <fx:jvmarg value="-Dsiterise.bundledLaunch=true"/>
            </fx:platform>
            <fx:resources>
                <fx:fileset dir="${dist.dir}/stage">
                    <include name="*/**"/>
                </fx:fileset>
            </fx:resources>
            <fx:preferences shortcut="false" install="false" menu="false"/>
            <fx:info title="${prodname}" vendor="Sutro Software" description="Siterise"/>
        </fx:deploy>