You have to go to Google → Web Toolkit, not App Engine. On Tuesday, March 5, 2013 4:13:18 PM UTC+1, Juan Ignacio Garzón wrote: > > Hi! > > I'm having problems while configuring the GWT App Engine in eclipse. I go > to preferences -> Google -> App Engine -> Add... and when I enter the > directory, I got an error message "Failed to initialize App Engine SDK at > c:\java\gwt-2.5.0" > > In Eclipse's error log I see the following stacktrace: > > java.lang.NoClassDefFoundError: > com/google/appengine/tools/admin/AdminException > at java.lang.Class.getDeclaredConstructors0(Native Method) > at java.lang.Class.privateGetDeclaredConstructors(Unknown Source) > at java.lang.Class.getConstructor0(Unknown Source) > at java.lang.Class.newInstance0(Unknown Source) > at java.lang.Class.newInstance(Unknown Source) > at > com.google.appengine.eclipse.core.sdk.AppEngineBridgeFactory.createBridge(AppEngineBridgeFactory.java:183) > at > com.google.appengine.eclipse.core.sdk.AppEngineBridgeFactory.createBridge(AppEngineBridgeFactory.java:121) > at > com.google.appengine.eclipse.core.sdk.AppEngineBridgeFactory.getAppEngineBridge(AppEngineBridgeFactory.java:94) > at > com.google.appengine.eclipse.core.sdk.GaeSdk.getAppEngineBridge(GaeSdk.java:287) > at > com.google.appengine.eclipse.core.sdk.GaeSdk.validate(GaeSdk.java:460) > at > com.google.gdt.eclipse.core.ui.AddSdkDialog.validateSdk(AddSdkDialog.java:273) > at > com.google.gdt.eclipse.core.ui.AddSdkDialog.validate(AddSdkDialog.java:213) > at > com.google.gdt.eclipse.core.ui.AddSdkDialog$3.focusLost(AddSdkDialog.java:171) > at > org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:143) > at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) > at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) > at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077) > at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1058) > at org.eclipse.swt.widgets.Control.sendFocusEvent(Control.java:2822) > at org.eclipse.swt.widgets.Widget.wmKillFocus(Widget.java:1921) > at org.eclipse.swt.widgets.Control.WM_KILLFOCUS(Control.java:4900) > at org.eclipse.swt.widgets.Control.windowProc(Control.java:4562) > at org.eclipse.swt.widgets.Text.windowProc(Text.java:2254) > at org.eclipse.swt.widgets.Display.windowProc(Display.java:4985) > at org.eclipse.swt.internal.win32.OS.PeekMessageW(Native Method) > at org.eclipse.swt.internal.win32.OS.PeekMessage(OS.java:3114) > at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3749) > at org.eclipse.jface.window.Window.runEventLoop(Window.java:825) > at org.eclipse.jface.window.Window.open(Window.java:801) > at > com.google.appengine.eclipse.core.preferences.ui.GaePreferencePage$1.doAddSdk(GaePreferencePage.java:90) > at > com.google.gdt.eclipse.core.ui.SdkTable$3.widgetSelected(SdkTable.java:242) > at > org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240) > at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) > at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) > at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165) > at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754) > at org.eclipse.jface.window.Window.runEventLoop(Window.java:825) > at org.eclipse.jface.window.Window.open(Window.java:801) > at > org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:215) > at > org.eclipse.ui.internal.handlers.ShowPreferencePageHandler.execute(ShowPreferencePageHandler.java:54) > at > org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293) > at > org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) > at > org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) > at > org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169) > at > org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241) > at > org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157) > at > org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584) > at > org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501) > at > org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411) > at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) > at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) > at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165) > at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754) > at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696) > at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660) > at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494) > at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674) > at > org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) > at > org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667) > 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) > Caused by: java.lang.ClassNotFoundException: > com.google.appengine.tools.admin.AdminException > 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 java.lang.ClassLoader.loadClass(Unknown Source) > at java.lang.ClassLoader.loadClassInternal(Unknown Source) > ... 74 more > > Apparently, its a problem with my environment, because this happens also > with Eclipse Juno, after cleaning, switching workspaces, etc. > > I use windows XP sp3 32 bit, with GWT Eclipse plugin > 3.2.0.v201302131858-rel-r37 > > Please help, im stuck with this error, I found no solution after googling > for a few hours. > > Regards, > Juan Ignacio >
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