hola - 2003-02-17

while decompiling a .jar; in some files I recive this error:
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Can't read class netscape.javascript.JSObject, types may be incorrect. (jode.bytecode.ClassFormatException: Wrong class version)
jode.bytecode.ClassFormatException: Wrong class version
    at jode.bytecode.ClassInfo.read(ClassInfo.java:292)
    at jode.bytecode.ClassInfo.loadInfo(ClassInfo.java:614)
    at jode.bytecode.ClassInfo.getModifiers(ClassInfo.java:745)
    at jode.bytecode.ClassInfo.isInterface(ClassInfo.java:750)
    at jode.type.ClassInterfacesType.<init>(ClassInterfacesType.java:62)
    at jode.type.Type.tClass(Type.java:230)
    at jode.type.Type.tClass(Type.java:213)
    at jode.type.Type.tType(Type.java:198)
    at jode.decompiler.FieldAnalyzer.<init>(FieldAnalyzer.java:52)
    at jode.decompiler.ClassAnalyzer.initialize(ClassAnalyzer.java:232)
    at jode.decompiler.ClassAnalyzer.dumpJavaFile(ClassAnalyzer.java:620)
    at jode.decompiler.Decompiler.decompile(Decompiler.java:192)
    at jode.swingui.Main.run(Main.java:204)
    at java.lang.Thread.run(Thread.java:536)
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this class is supposed to be in jaws.jar; and it should be a standard. Where is the problem?