Logcat show me this:
06-22 12:55:03.342: E/AndroidRuntime(12458): FATAL EXCEPTION: main
06-22 12:55:03.342: E/AndroidRuntime(12458): java.lang.ExceptionInInitializerError
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.Class.newInstanceImpl(Native Method)
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.Class.newInstance(Class.java:1409)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.app.Instrumentation.newActivity(Instrumentation.java:1024)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1565)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.os.Handler.dispatchMessage(Handler.java:99)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.os.Looper.loop(Looper.java:130)
06-22 12:55:03.342: E/AndroidRuntime(12458): at android.app.ActivityThread.main(ActivityThread.java:3691)
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.reflect.Method.invokeNative(Native Method)
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.reflect.Method.invoke(Method.java:507)
06-22 12:55:03.342: E/AndroidRuntime(12458): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
06-22 12:55:03.342: E/AndroidRuntime(12458): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:670)
06-22 12:55:03.342: E/AndroidRuntime(12458): at dalvik.system.NativeStart.main(Native Method)
06-22 12:55:03.342: E/AndroidRuntime(12458): Caused by: java.lang.NoClassDefFoundError: com.qualcomm.ar.pl.CameraPreview
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.Runtime.nativeLoad(Native Method)
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.Runtime.loadLibrary(Runtime.java:432)
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.System.loadLibrary(System.java:554)
06-22 12:55:03.342: E/AndroidRuntime(12458): at com.qualcomm.QCARSamples.FrameMarkers.FrameMarkers.loadLibrary(FrameMarkers.java:675)
06-22 12:55:03.342: E/AndroidRuntime(12458): at com.qualcomm.QCARSamples.FrameMarkers.FrameMarkers.<clinit>(FrameMarkers.java:101)
06-22 12:55:03.342: E/AndroidRuntime(12458): ... 15 more
06-22 12:55:03.342: E/AndroidRuntime(12458): Caused by: java.lang.ClassNotFoundException: com.qualcomm.ar.pl.CameraPreview in loader dalvik.system.PathClassLoader[/data/app/com.qualcomm.QCARSamples.FrameMarkers-1.apk]
06-22 12:55:03.342: E/AndroidRuntime(12458): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
06-22 12:55:03.342: E/AndroidRuntime(12458): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
06-22 12:55:03.342: E/AndroidRuntime(12458): ... 20 more
were marked in red
No problem. I should have had you check that first. It's a required step that people often overlook.