cocos2dx assets根目录录取失败，这个问题要怎么解决啊？

先说原因
创建出来的cocos2dx工程，assets应该是编译出来的。
追加的资源要放到Resources中，编译的时候会自动copy到assets
cocos run会先删除assets，重新载入资源。
如果直接去改assets中的资源，会报WindowsError: [Error 5] :的错误
网上说是python权限问题。不深究了。


可能老手都没遇到过，我这样的新人小白要多注意
本人初学cocos2dx，万事开头难啊。。。


android-ndk-r9d
cocos2d-x-3.0rc0
按照http://blog.csdn.net/start530/article/details/21483729
1、python 配置环境变量
2、cocos new 新建工程
3、cocos run 编译执行


链接手机，执行OK。第一次运行发现挺顺利


然后试了试。
1、修改cpp 修改了字符串，hello world什么的 --------编译，运行OK


2、悲剧发生在这里，想换个图片，从网上下载了个png，应该不大 570*355
直接扔到了assets文件夹中，我没有修改任何文件，没有去使用这个资源
cocos run 报错，然后assets文件夹被自动删除了，里头的所有资源包括原来的图片
都没了  


跪求 解答 谢谢
-------------------------------------------------------------------------------------------------------------


D:\Cocos2dxDemo\HelloNew2dx>
D:\Cocos2dxDemo\HelloNew2dx>
D:\Cocos2dxDemo\HelloNew2dx>cocos run  -p android


D:\Cocos2dxDemo\HelloNew2dx>python D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin
\/cocos.py run  -p android
Runing command: compile
Building mode: debug
building native
The Selected NDK toolchain version was 4.8 !
running: 'D:\android-ndk-r9d\ndk-build -j4 -C D:\Cocos2dxDemo\HelloNew2dx\proj.a
ndroid -j1 NDK_MODULE_PATH=D:\Cocos2dxDemo\HelloNew2dx\proj.android\../cocos2d;D
:\Cocos2dxDemo\HelloNew2dx\proj.android\../cocos2d/cocos;D:\Cocos2dxDemo\HelloNe
w2dx\proj.android\../cocos2d/external'


Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersi
on 9 in ./AndroidManifest.xml
Android NDK: WARNING:D:\Cocos2dxDemo\HelloNew2dx\proj.android\../cocos2d/cocos/2
d/Android.mk:cocos2dx_static: LOCAL_LDLIBS is always ignored for static librarie
s
Android NDK: WARNING:D:\Cocos2dxDemo\HelloNew2dx\proj.android\../cocos2d/cocos/2
d/platform/android/Android.mk:cocos2dxandroid_static: LOCAL_LDLIBS is always ign
ored for static libraries
make.exe: Entering directory `D:/Cocos2dxDemo/HelloNew2dx/proj.android'
[armeabi] Install        : libcocos2dcpp.so => libs/armeabi/libcocos2dcpp.so
make.exe: Leaving directory `D:/Cocos2dxDemo/HelloNew2dx/proj.android'
building apk
Android platform not specified, searching a default one...
android-19 is found
Traceback (most recent call last):
  File "D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin\/cocos.py", line 578, in <
module>
    run_plugin(command, argv, plugins)
  File "D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin\/cocos.py", line 558, in r
un_plugin
    dependencies_objects[dep_name] = run_plugin(dep_name, argv, plugins)
  File "D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin\/cocos.py", line 560, in r
un_plugin
    plugin.run(argv, dependencies_objects)
  File "D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin\..\plugins\project_compile
\project_compile.py", line 636, in run
    self.build_android()
  File "D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin\..\plugins\project_compile
\project_compile.py", line 140, in build_android
    builder.do_build_apk(sdk_root, ant_root, android_platform, build_mode, outpu
t_dir)
  File "D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin\..\plugins\project_compile
\build_android.py", line 125, in do_build_apk
    self._copy_resources()
  File "D:\cocos2d-x-3.0rc0\tools\cocos2d-console\bin\..\plugins\project_compile
\build_android.py", line 172, in _copy_resources
    os.mkdir(assets_dir)
WindowsError: [Error 5] : 'D:\\Cocos2dxDemo\\HelloNew2dx\\proj.android\\assets'
D:\Cocos2dxDemo\HelloNew2dx>