android 虚拟机启动错误

From today, when I tried to run an app in NetBeans on a 2.3.3 Android platform, it shows me that:

Failed to allocate memory: 8

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
and the Emulator doesn't want to start.
错误原因：

In my case:

• Using built in WXGA720 to simulate 720p device, always got this error
• Manually set AVD resolution to 720 x 1280, works for me