运行程序中出现Error type 3,请帮忙，多谢

运行程序中出现Error type 3,请帮忙，谢谢！
[2010-03-29 18:23:32 - Map_Navigation]Starting activity com.android.map_navigation.MainActivity on device 
[2010-03-29 18:23:33 - Map_Navigation]New package not yet registered with the system. Waiting 3 seconds before next attempt.
[2010-03-29 18:23:36 - Map_Navigation]Starting activity com.android.map_navigation.MainActivity on device 
[2010-03-29 18:23:37 - Map_Navigation]ActivityManager: Starting: Intent { cmp=com.android.map_navigation/.MainActivity }
[2010-03-29 18:23:37 - Map_Navigation]ActivityManager: Error type 3
[2010-03-29 18:23:37 - Map_Navigation]ActivityManager: Error: Activity class {com.android.map_navigation/com.android.map_navigation.MainActivity} does not exist.

------解决方案--------------------
{com.android.map_navigation/com.android.map_navigation.MainActivity} does not exist.
这不很明显了么。
LZ是怎么启动Activity的，Intent.action还是直接setClass,Manifest中声明了吗？
------解决方案--------------------

探讨

我没明白你的意思，Intent.action还是直接setClass是什么意思，我就是正常RUN启动的，Manifest中是有声明的！

引用:
{com.android.map_navigation/com.android.map_navigation.MainActivity} does not exist.
这不很明显了么。
LZ是怎么启动Acti……