javadoc produces IllegalArgumentException

[vizlab]

Hi,
I tried to use javadoc to document a java file, but got the error:
Thanks a lot for your help.

Best

*************************************************************************

java.lang.IllegalArgumentException
at sun.net.www.ParseUtil.decode(ParseUtil.java:183)
at sun.misc.URLClassPath$FileLoader.<init>(URLClassPath.java:860)
at sun.misc.URLClassPath$3.run(URLClassPath.java:316)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath.getLoader(URLClassPath.java:310)
at sun.misc.URLClassPath.getLoader(URLClassPath.java:287)
at sun.misc.URLClassPath.findResource(URLClassPath.java:138)
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:977)
at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1159)
at javax.xml.parsers.SecuritySupport$4.run(SecuritySupport.java:72)
at java.security.AccessController.doPrivileged(Native Method)
at javax.xml.parsers.SecuritySupport.getResourceAsStream(SecuritySupport
..java:65)
at javax.xml.parsers.FactoryFinder.findJarServiceProvider(FactoryFinder.
java:213)
at javax.xml.parsers.FactoryFinder.find(FactoryFinder.java:185)
at javax.xml.parsers.SAXParserFactory.newInstance(SAXParserFactory.java:
107)
at com.sun.tools.doclets.internal.toolkit.builders.LayoutParser.parseXML
(LayoutParser.java:72)
at com.sun.tools.doclets.internal.toolkit.builders.ClassBuilder.build(Cl
assBuilder.java:108)
at com.sun.tools.doclets.formats.html.HtmlDoclet.generateClassFiles(Html
Doclet.java:155)
at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFi
les(AbstractDoclet.java:177)

......