Yes, sounds like somewhere in your app there is a permissions issue. Can you run it in a debugger?
docx4all uses JavaFX (1.0) and signed jar files. For what it is worth, its build.xml contains:
Using xml Syntax Highlighting
<!-- The Ant Web Start task
You may need to invoke ant with something like:
ANT_OPTS="-Xmx512m -XX:MaxPermSize=256m" ant webstart
Replace the servlet jar it generates with our new one from Java 6
(which handles if-modifies-since properly)
-->
<typedef resource="org/unintelligible/antjnlpwar/antjnlpwar.xml" format="xml" uri="org.unintelligible.antjnlpwar"/>
<target name="webstart" depends="clean, build-project" >
<property name="lib" value="./build/lib"/>
<mkdir dir="${lib}"/>
<!-- copy all the jar files! -->
<copy todir="${lib}" flatten="true">
<!-- requires Ant 1.7.0 -->
<path>
<path refid="docx4all.classpath"/>
</path>
</copy>
<jar destfile="docx4all.jar" basedir="build/classes" index="true">
<indexjars>
<fileset dir="${lib}" />
</indexjars>
<!-- workaround for the fact that indexjars doesn't index
META-INF, with the result that class loader can't
find eg vfs-providers.xml.
See ant bugzilla bug 47457
JAR is happy to have 2 entries with the same name;
Unpack will fail though.
-->
<zipfileset src="${lib}/webdavclient4j-vfs-0.9.3.jar"
excludes="META-INF/MANIFEST.MF META-INF/ALIAS.* META-INF/*.txt META-INF/*.SERIALIZER META-INF/LICENSE META-INF/NOTICE"
includes="META-INF/**"/>
<!-- services/javax.script.ScriptEngineFactory -->
<zipfileset src="${lib}/javafxrt-1.0.jar"
excludes="META-INF/MANIFEST.MF META-INF/ALIAS.* META-INF/*.txt META-INF/*.SERIALIZER META-INF/LICENSE META-INF/NOTICE"
includes="META-INF/**"/>
<!-- services/com.sun.tools.xjc.Plugin -->
<zipfileset src="${lib}/parent-pointer-plugin-1.0.jar"
excludes="META-INF/MANIFEST.MF META-INF/ALIAS.* META-INF/*.txt META-INF/*.SERIALIZER META-INF/LICENSE META-INF/NOTICE"
includes="META-INF/**"/>
<!-- services/blagh blagh -->
<zipfileset src="${lib}/xmlgraphics-commons-1.3.757686.jar"
excludes="META-INF/MANIFEST.MF META-INF/ALIAS.* META-INF/*.txt META-INF/*.SERIALIZER META-INF/LICENSE META-INF/NOTICE"
includes="META-INF/**"/>
<zipfileset src="${lib}/fop-patched-0.95.756437.jar"
excludes="META-INF/MANIFEST.MF META-INF/ALIAS.* META-INF/*.txt META-INF/*.SERIALIZER META-INF/LICENSE META-INF/NOTICE
META-INF/services/org.apache.xmlgraphics.*"
includes="META-INF/**"/> <!-- 2 copies of xmlgraphics causes unpack task to fail -->
</jar>
<!-- somewhere other than ${lib}, docx4all does not need to be in
the above; it is handled by jw:application below. -->
<!-- Create a distributable WAR archive of the application using the following attributes:
* tofile: the destination WAR file
* codebase: where the application will be deployed to
* title: the application name
* vendor: your company name
* pack200: create pack200 archives for quicker client downloads
* signStorePass: the password to your Java certificate store (used to sign the jars)
* signAlias: the name of the certificate to use (used to sign the jars)
-->
<jw:jnlpwar
tofile="docx4all.war"
codebase="/docx4all"
title="docx4all"
vendor="localhost"
pack200="true"
signStorepass="password"
signAlias="alias">
<!-- should work with a key defined as follows:
keytool -genkey -alias alias -dname "CN=A Developer, O=Open Source" -validity 9999 -keystore .keystore -keypass password -storepass password
-->
<!-- Add a normal and a short description -->
<jw:description>cross platform WYSIWYG editor for docx files
</jw:description>
<jw:description kind="short">cross platform WYSIWYG editor for docx files
</jw:description>
<!-- Add an icon for the application
<jw:icon file="path/to/icon.jpg"/> -->
<!-- Show a splash screen when the application launches
<jw:icon kind="splash" file="path/to/splash.jpg"/> -->
<!-- Specify the minimal version of Java required by the app, along with
some command-line arguments -->
<jw:j2se minVersion="1.5"> <!-- task doesn't support 1.6, nor href="http://java.sun.com/products/autodl/j2se" -->
</jw:j2se>
<!-- Add the libraries used by the application -->
<lib dir="${lib}">
<include name="**/*.jar"/>
</lib>
<!-- Specify the main class for the application,
and the jar it is located in (can be duplicate from the lib element) -->
<jw:application mainclass="org.docx4all.ui.main.WordMLEditor" jar="docx4all.jar"/>
</jw:jnlpwar>
</target>
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