我正在尝试在我的 Galaxy s3 上运行 google-play-services_lib，但我得到了这个：
[2013-09-05 02:39:19 - google-play-services_lib] ------------------------------
[2013-09-05 02:39:19 - google-play-services_lib] Android Launch!
[2013-09-05 02:39:19 - google-play-services_lib] adb is running normally.
[2013-09-05 02:39:19 - google-play-services_lib] No Launcher activity found!
[2013-09-05 02:39:19 - google-play-services_lib] The launch will only sync the application package on the device!
[2013-09-05 02:39:19 - google-play-services_lib] Performing sync
[2013-09-05 02:39:24 - google-play-services_lib] Uploading google-play-services_lib.apk onto device 'd20eb13c'
[2013-09-05 02:39:24 - google-play-services_lib] Installing google-play-services_lib.apk...
[2013-09-05 02:39:37 - google-play-services_lib] Installation error! The package already exists.
[2013-09-05 02:39:37 - google-play-services_lib] Launch canceled!
有谁知道我应该怎么做？谢谢。