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Eclipse software update: NPE popup on saving edited source
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created by <a href="https://community.jboss.org/people/kwutzke">Karsten Wutzke</a> in <i>JBoss Tools</i> - <a href="https://community.jboss.org/message/731249#731249">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hello all,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I've upgraded Eclipse 3.7 to the latest available software. I've never had big problems with that. I checked all that could be updated.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Now however, I keep getting the following popup:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><a href="https://community.jboss.org/servlet/JiveServlet/showImage/2-731249-18438/eclipse-update-npe-popup.png"><span> https://community.jboss.org/servlet/JiveServlet/downloadImage/2-731249-18438/450-268/eclipse-update-npe-popup.png </span></a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Exception (copied from the Eclipse .log):</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code">!ENTRY org.eclipse.jface 4 2 2012-04-20 08:54:58.618
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.NullPointerException
    at com.sun.enterprise.jst.server.sunappsrv.actions.PreludeUpdateCenterAction.accept(PreludeUpdateCenterAction.java:171)
    at com.sun.enterprise.jst.server.sunappsrv.actions.AppServerContextAction.selectionChanged(AppServerContextAction.java:238)
    at org.eclipse.ui.actions.SelectionProviderAction.selectionChanged(SelectionProviderAction.java:143)
    at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:164)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
    at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:162)
    at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2188)
    at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1725)
    at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:1139)
    at org.eclipse.ui.navigator.CommonViewer.setSelection(CommonViewer.java:377)
    at org.eclipse.jface.viewers.Viewer.setSelection(Viewer.java:394)
    at org.eclipse.wst.server.ui.internal.cnf.ServerDecoratorsHandler$1.run(ServerDecoratorsHandler.java:58)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Note this appears twice in the log, thus the two NPEs in the popup.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When I edit any Java file a popup dialog appears <strong>on every save operation while the JBoss 7 server is running</strong>. It could hardly be more annoying to be honest!</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>What's wrong here? Who's responsible? Is it a JBT issue at all? I have no idea.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I cannot revert to the previous install, it fails with some error that some older Eclipse repos aren't found or so.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Karsten</p></div>
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