I am trying to Jar my client which it works fine however I am using Theme.jar and i get this error when running thr jar

java.lang.ClassNotFoundException: org.jvnet.substance.skin.SubstanceRavenLookAnd
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClassInternal(Unknown Source)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at javax.swing.SwingUtilities.loadSystemClass(Unknown Source)
        at javax.swing.UIManager.setLookAndFeel(Unknown Source)
        at Gui.initUI(Gui.java:76)
        at Gui.<init>(Gui.java:53)
        at Gui.main(Gui.java:35)
It gives me the error on this line

And I am not to sure on how to get it to work I have tried including jar files in my main client jar as well as just putting it in the dir with the client jar file. Still no go. Removing it allows it to work


Edit: Fixed cache issue