java.lang.AssertionError
        at org.netbeans.modules.j2ee.deployment.impl.ServerString.<init>(ServerString.java:45)
        at org.netbeans.modules.j2ee.deployment.devmodules.api.JSPServletFinder.getServerString(JSPServletFinder.java:70)
        at org.netbeans.modules.j2ee.deployment.devmodules.api.JSPServletFinder.getServletFinder(JSPServletFinder.java:104)
        at org.netbeans.modules.j2ee.deployment.devmodules.api.JSPServletFinder.getServletTempDirectory(JSPServletFinder.java:114)
        at org.netbeans.modules.web.core.jsploader.CompileData.<init>(CompileData.java:58)
        at org.netbeans.modules.web.core.jsploader.JspDataObject.getPlugin(JspDataObject.java:108)
        at org.netbeans.modules.web.core.jsploader.JspDataObject.refreshPlugin(JspDataObject.java:121)
        at org.netbeans.modules.web.core.jsploader.EditServletAction.enable(EditServletAction.java:63)
        at org.openide.util.actions.NodeAction$DelegateAction.resultChanged(NodeAction.java:467)
        at org.openide.util.actions.CookieAction$CookieDelegateAction.superResultChanged(CookieAction.java:256)
        at org.openide.util.actions.CookieAction$CookieDelegateAction.resultChanged(CookieAction.java:252)
        at org.openide.util.actions.NodeAction$DelegateAction.<init>(NodeAction.java:414)
        at org.openide.util.actions.CookieAction$CookieDelegateAction.<init>(CookieAction.java:245)
        at org.openide.util.actions.CookieAction.createContextAwareInstance(CookieAction.java:105)
        at org.openide.util.Utilities.actionsToPopup(Utilities.java:2146)
        at org.openide.util.Utilities.actionsToPopup(Utilities.java:2215)
        at org.openide.explorer.view.TreeView.createPopup(TreeView.java:1040)
        at org.openide.explorer.view.TreeView$PopupAdapter.showPopup(TreeView.java:1023)
        at org.openide.awt.MouseUtils$PopupMouseAdapter.maybePopup(MouseUtils.java:138)
        at org.openide.awt.MouseUtils$PopupMouseAdapter.mousePressed(MouseUtils.java:129)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:222)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
        at java.awt.Component.processMouseEvent(Component.java:5485)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3093)
        at java.awt.Component.processEvent(Component.java:5253)
        at java.awt.Container.processEvent(Container.java:1966)
        at java.awt.Component.dispatchEventImpl(Component.java:3955)
        at java.awt.Container.dispatchEventImpl(Container.java:2024)
        at java.awt.Component.dispatchEvent(Component.java:3803)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3889)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
        at java.awt.Container.dispatchEventImpl(Container.java:2010)
        at java.awt.Window.dispatchEventImpl(Window.java:1766)
        at java.awt.Component.dispatchEvent(Component.java:3803)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
[catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)