I'm getting the following exception when I try to install the add-on. I have created the package structure corrctly. What might be the possible issue for this ?
2016-09-20 15:29:47,987 [AWT-EventQueue-0] ERROR AddOnLoaderUtils - Declared "extension" was not found: org.zaproxy.zap.extension.zapwso2jiraplugin.JiraIssueCreatorExtension
java.lang.ClassNotFoundException
at org.zaproxy.zap.control.AddOnClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.zaproxy.zap.control.AddOnLoaderUtils.loadAndInstantiateClassImpl(Unknown Source)
at org.zaproxy.zap.control.AddOnLoaderUtils.loadAndInstantiateClass(Unknown Source)
at org.zaproxy.zap.control.AddOnLoader.loadAddOnExtension(Unknown Source)
at org.zaproxy.zap.control.AddOnLoader.loadAddOnExtensions(Unknown Source)
at org.zaproxy.zap.control.AddOnLoader.getExtensions(Unknown Source)
at org.zaproxy.zap.control.ExtensionFactory.loadAddOnExtensions(Unknown Source)
at org.zaproxy.zap.control.AddOnInstaller.installAddOnExtensions(Unknown Source)
at org.zaproxy.zap.control.AddOnInstaller.install(Unknown Source)
at org.zaproxy.zap.control.AddOnLoader.addAddOnImpl(Unknown Source)
at org.zaproxy.zap.control.AddOnLoader.addAddon(Unknown Source)
at org.zaproxy.zap.extension.autoupdate.ExtensionAutoUpdate.install(Unknown Source)
at org.zaproxy.zap.extension.autoupdate.ExtensionAutoUpdate.installLocalAddOn(Unknown Source)
at org.zaproxy.zap.extension.autoupdate.ExtensionAutoUpdate.installLocalAddOn(Unknown Source)
at org.zaproxy.zap.extension.autoupdate.ExtensionAutoUpdate.access$100(Unknown Source)
at org.zaproxy.zap.extension.autoupdate.ExtensionAutoUpdate$2.actionPerformed(Unknown Source)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6535)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6300)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4891)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)