EROR WHEN PROJECT WORKING

[Volkanugr]

hi all EROR STRING :

01-08 09:46:01.033: E/AndroidRuntime(12473): FATAL EXCEPTION: main 01-08 09:46:01.033: E/AndroidRuntime(12473): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.jake.quiltview/com.jake.quiltview.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.jake.quiltview.MainActivity" on path: DexPathList[[zip file "/data/app/com.jake.quiltview-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.jake.quiltview-2, /vendor/lib, /system/lib]] 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2232) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.app.ActivityThread.access$600(ActivityThread.java:156) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.os.Handler.dispatchMessage(Handler.java:99) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.os.Looper.loop(Looper.java:153) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.app.ActivityThread.main(ActivityThread.java:5299) 01-08 09:46:01.033: E/AndroidRuntime(12473): at java.lang.reflect.Method.invokeNative(Native Method) 01-08 09:46:01.033: E/AndroidRuntime(12473): at java.lang.reflect.Method.invoke(Method.java:511) 01-08 09:46:01.033: E/AndroidRuntime(12473): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 01-08 09:46:01.033: E/AndroidRuntime(12473): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 01-08 09:46:01.033: E/AndroidRuntime(12473): at dalvik.system.NativeStart.main(Native Method) 01-08 09:46:01.033: E/AndroidRuntime(12473): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.jake.quiltview.MainActivity" on path: DexPathList[[zip file "/data/app/com.jake.quiltview-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.jake.quiltview-2, /vendor/lib, /system/lib]] 01-08 09:46:01.033: E/AndroidRuntime(12473): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53) 01-08 09:46:01.033: E/AndroidRuntime(12473): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 01-08 09:46:01.033: E/AndroidRuntime(12473): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.app.Instrumentation.newActivity(Instrumentation.java:1054) 01-08 09:46:01.033: E/AndroidRuntime(12473): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2223) 01-08 09:46:01.033: E/AndroidRuntime(12473): ... 11 more