尝试使用AVD管理器创建新设备定义时,除了以下终端输出外,没有任何反应：

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.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
    at org.eclipse.jface.window.Window.open(Window.java:801)
    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(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at com.android.sdkuilib.internal.repository.ui.AvdManagerWindowImpl1.open(AvdManagerWindowImpl1.java:146)
    at com.android.sdkuilib.repository.AvdManagerWindow.open(AvdManagerWindow.java:94)
    at com.android.sdkmanager.Main.showAvdManagerWindow(Main.java:437)
    at com.android.sdkmanager.Main.doAction(Main.java:379)
    at com.android.sdkmanager.Main.run(Main.java:150)
    at com.android.sdkmanager.Main.main(Main.java:116)

这是窗口的屏幕截图：

我已经尝试运行AVD管理器,使用android avd和android sdk具有相同的结果.我能够根据通用设备定义创建一个新的AVD,就是这样.

我身边有什么问题,还是遇到某种错误？