Could not find class 'com.easemob.chatuidemo.ui.MainActivity'

10-21 13:42:55.930: E/AndroidRuntime(20022): FATAL EXCEPTION: main
10-21 13:42:55.930: E/AndroidRuntime(20022): java.lang.NoClassDefFoundError: com.parse.Parse
10-21 13:42:55.930: E/AndroidRuntime(20022):     at com.easemob.chatuidemo.parse.ParseManager.onInit(ParseManager.java:47)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at com.easemob.chatuidemo.parse.UserProfileManager.init(UserProfileManager.java:44)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at com.easemob.chatuidemo.DemoHelper.init(DemoHelper.java:164)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at com.easemob.chatuidemo.DemoApplication.onCreate(DemoApplication.java:40)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:981)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4494)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at android.app.ActivityThread.access$1300(ActivityThread.java:139)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1306)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at android.os.Handler.dispatchMessage(Handler.java:99)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at android.os.Looper.loop(Looper.java:156)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at android.app.ActivityThread.main(ActivityThread.java:4987)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at java.lang.reflect.Method.invokeNative(Native Method)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at java.lang.reflect.Method.invoke(Method.java:511)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
10-21 13:42:55.930: E/AndroidRuntime(20022):     at dalvik.system.NativeStart.main(Native Method)