Reported in https://forums.oracle.com/forums/thread.jspa?threadID=2438225&tstart=0

Code like:

<fx:deploy extension="true" outdir="${application.dist}" outfile="BouncyCastle">
   <fx:resources>
      <fx:fileset dir="${application.dist}" includes="lib/bc*.jar"/>
   </fx:resources>
</fx:deploy>

will generate malformed XML

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0" xmlns:jfx="http://javafx.com" href="BouncyCastle.jnlp">
  <information>
    <title>Sample JavaFX Application</title>
    <vendor>Unknown vendor</vendor>
    <description>Sample JavaFX 2.0 application.</description>
  </information>
  <resources> <jar href="lib/bcmail-jdk14-1.38.jar" size="192797" download="eager" />
  <resources> <jar href="lib/bcmail-jdk14-138.jar" size="192797" download="eager" />
  <resources> <jar href="lib/bcmail-jdk16-1.46.jar" size="502242" download="eager" />
  <resources> <jar href="lib/bcprov-jdk14-1.38.jar" size="1552230" download="eager" />
  <resources> <jar href="lib/bcprov-jdk14-138.jar" size="1552230" download="eager" />
  <resources> <jar href="lib/bcprov-jdk16-1.46.jar" size="1877314" download="eager" />
  <resources> <jar href="lib/bctsp-jdk14-1.38.jar" size="23756" download="eager" />
  </resources>
<component-desc/>
  <update check="background"/>
</jnlp>