java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.android.sdkuilib.internal.widgets.DeviceCreationDialog.okPressed(DeviceCreationDialog.java:916)
at org.eclipse.jface.dialogs.Dialog.buttonPressed(Dialog.java:472)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
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:4169)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at com.android.sdkuilib.internal.repository.ui.DeviceManagerPage.onNewDevice(DeviceManagerPage.java:658)
at com.android.sdkuilib.internal.repository.ui.DeviceManagerPage.access$100(DeviceManagerPage.java:97)
at com.android.sdkuilib.internal.repository.ui.DeviceManagerPage$3.widgetSelected(DeviceManagerPage.java:215)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
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:4169)
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:353)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)

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