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    You try to create a ZipInputStream from a null InputStream.

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java.lang.NullPointerException: in is null	at	at java.util.jar.JarInputStream.(	at java.util.jar.JarInputStream.(	at org.hibernate.ejb.packaging.InputStreamZippedJarVisitor.doProcessElements(	at org.hibernate.ejb.packaging.AbstractJarVisitor.getMatchingEntries(	at org.hibernate.ejb.packaging.NativeScanner.getFilesInJar(	at org.hibernate.ejb.Ejb3Configuration.addScannedEntries(	at org.hibernate.ejb.Ejb3Configuration.scanForClasses(	at org.hibernate.ejb.Ejb3Configuration.configure(