A version number of the wizard.jar is missing.
Please add one to be able do differentiate different wizard versions.
1. Add a version to the file name like wizard-1.1.jar
2. Add a version number to the the MANIFEST.MF (http://docs.oracle.com/javase/7/docs/technotes/guides/jar/jar.html#JAR%20Manifest)
3. (would be cool Supply a maven project with a pom.xml file