Erro em gerar Javadoc no Eclipse

Olá, Pessoal

Estou tentando gerar um Javadoc para um códgio fonte de uma classe. Pesquisei no GUJ e encontrei vários tópicos sobre o tema.
Encontrei um tópico que me orientou melhor sobre o assunto, então fiz os seguintes passos.

1- File>Export
2- selecionei a opção JavaDoc
3- cliqueei em "Next"
4- Marquei o projeto para gerar javadoc
5- Em Javadoc Command coloquei C:\Program Files\Java\jdk1.6.0_16\bin\javadoc.exe
6- Apontei para onde ele vai ser gerado (Destination)
7- Cliquei em “Finish”

E apareceu o seguinte erro

Loading source file C:\Users\Peres\workspace\JavaOO\src\Date.java...
Constructing Javadoc information...
Standard Doclet version 1.6.0_16
Building tree for all the packages and classes...
Generating C:\Users\Peres\workspace\JavaOO\doc\Date.html...
java.lang.IllegalArgumentException
	at sun.net.www.ParseUtil.decode(ParseUtil.java:189)
	at sun.misc.URLClassPath$FileLoader.<init>(URLClassPath.java:954)
	at sun.misc.URLClassPath$3.run(URLClassPath.java:326)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.misc.URLClassPath.getLoader(URLClassPath.java:320)
	at sun.misc.URLClassPath.getLoader(URLClassPath.java:297)
	at sun.misc.URLClassPath.findResource(URLClassPath.java:144)
	at java.net.URLClassLoader$2.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findResource(URLClassLoader.java:359)
	at java.lang.ClassLoader.getResource(ClassLoader.java:978)
	at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1168)
	at javax.xml.parsers.SecuritySupport$4.run(SecuritySupport.java:96)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.xml.parsers.SecuritySupport.getResourceAsStream(SecuritySupport.java:89)
	at javax.xml.parsers.FactoryFinder.findJarServiceProvider(FactoryFinder.java:250)
	at javax.xml.parsers.FactoryFinder.find(FactoryFinder.java:223)
	at javax.xml.parsers.SAXParserFactory.newInstance(SAXParserFactory.java:128)
	at com.sun.tools.doclets.internal.toolkit.builders.LayoutParser.parseXML(LayoutParser.java:72)
	at com.sun.tools.doclets.internal.toolkit.builders.ClassBuilder.build(ClassBuilder.java:108)
	at com.sun.tools.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:155)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:177)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:161)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:106)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDoclet.java:64)
	at com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
	at com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
	at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
	at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
	at com.sun.tools.javadoc.Start.begin(Start.java:128)
	at com.sun.tools.javadoc.Main.execute(Main.java:41)
	at com.sun.tools.javadoc.Main.main(Main.java:31)
com.sun.tools.doclets.internal.toolkit.util.DocletAbortException
	at com.sun.tools.doclets.internal.toolkit.builders.LayoutParser.parseXML(LayoutParser.java:79)
	at com.sun.tools.doclets.internal.toolkit.builders.ClassBuilder.build(ClassBuilder.java:108)
	at com.sun.tools.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:155)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:177)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:161)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:106)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDoclet.java:64)
	at com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
	at com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
	at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
	at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
	at com.sun.tools.javadoc.Start.begin(Start.java:128)
	at com.sun.tools.javadoc.Main.execute(Main.java:41)
	at com.sun.tools.javadoc.Main.main(Main.java:31)
com.sun.tools.doclets.internal.toolkit.util.DocletAbortException
	at com.sun.tools.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:159)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:177)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:161)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:106)
	at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDoclet.java:64)
	at com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
	at com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
	at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
	at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
	at com.sun.tools.javadoc.Start.begin(Start.java:128)
	at com.sun.tools.javadoc.Main.execute(Main.java:41)
	at com.sun.tools.javadoc.Main.main(Main.java:31)

Será que alguém pode me dar uma luz???