一个android程序放在虚拟设备上不能正常运行，log如下，请高手指点

07-30 04:34:12.719: INFO/ActivityManager(52): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.you_project/.You_project }
07-30 04:34:12.819: INFO/ActivityManager(52): Start proc com.you_project for activity com.you_project/.You_project: pid=254 uid=10029 gids={}
07-30 04:34:13.059: DEBUG/ddm-heap(254): Got feature list request
07-30 04:34:13.309: DEBUG/AndroidRuntime(254): Shutting down VM
07-30 04:34:13.349: WARN/dalvikvm(254): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
07-30 04:34:13.349: ERROR/AndroidRuntime(254): Uncaught handler: thread main exiting due to uncaught exception
07-30 04:34:13.468: ERROR/AndroidRuntime(254): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.you_project/com.you_project.You_project}: java.lang.ClassNotFoundException: com.you_project.You_project in loader dalvik.system.PathClassLoader@44c067e8
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.app.ActivityThread.access$2200(ActivityThread.java:119)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.os.Looper.loop(Looper.java:123)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.app.ActivityThread.main(ActivityThread.java:4363)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at java.lang.reflect.Method.invokeNative(Native Method)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at java.lang.reflect.Method.invoke(Method.java:521)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at dalvik.system.NativeStart.main(Native Method)
07-30 04:34:13.468: ERROR/AndroidRuntime(254): Caused by: java.lang.ClassNotFoundException: com.you_project.You_project in loader dalvik.system.PathClassLoader@44c067e8
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
07-30 04:34:13.468: ERROR/AndroidRuntime(254):     ... 11 more
07-30 04:34:13.529: INFO/Process(52): Sending signal. PID: 254 SIG: 3
07-30 04:34:13.529: INFO/dalvikvm(254): threadid=7: reacting to signal 3
07-30 04:34:13.529: ERROR/dalvikvm(254): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
07-30 04:34:14.980: INFO/Process(254): Sending signal. PID: 254 SIG: 9
07-30 04:34:15.009: INFO/ActivityManager(52): Process com.you_project (pid 254) has died.
07-30 04:34:15.029: INFO/UsageStats(52): Unexpected resume of com.android.launcher while already resumed in com.you_project
07-30 04:34:15.149: WARN/InputManagerService(52): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44c64e98