Ok I tried the steps many times today but I still getting errors when I run it on my device.
07-05 14:38:48.430: E/AndroidRuntime(24526): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.qualcomm.QCARUnityPlayer/com.qualcomm.QCARUnityPlayer.QCARPlayerProxyActivity}: java.lang.ClassNotFoundException: com.qualcomm.QCARUnityPlayer.QCARPlayerProxyActivity in loader dalvik.system.PathClassLoader[/data/app/com.qualcomm.QCARUnityPlayer-2.apk]
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1742)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1834)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.app.ActivityThread.access$500(ActivityThread.java:122)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1027)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.os.Handler.dispatchMessage(Handler.java:99)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.os.Looper.loop(Looper.java:132)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.app.ActivityThread.main(ActivityThread.java:4126)
07-05 14:38:48.430: E/AndroidRuntime(24526): at java.lang.reflect.Method.invokeNative(Native Method)
07-05 14:38:48.430: E/AndroidRuntime(24526): at java.lang.reflect.Method.invoke(Method.java:491)
07-05 14:38:48.430: E/AndroidRuntime(24526): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
07-05 14:38:48.430: E/AndroidRuntime(24526): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
07-05 14:38:48.430: E/AndroidRuntime(24526): at dalvik.system.NativeStart.main(Native Method)
07-05 14:38:48.430: E/AndroidRuntime(24526): Caused by: java.lang.ClassNotFoundException: com.qualcomm.QCARUnityPlayer.QCARPlayerProxyActivity in loader dalvik.system.PathClassLoader[/data/app/com.qualcomm.QCARUnityPlayer-2.apk]
07-05 14:38:48.430: E/AndroidRuntime(24526): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:251)
07-05 14:38:48.430: E/AndroidRuntime(24526): at java.lang.ClassLoader.loadClass(ClassLoader.java:540)
07-05 14:38:48.430: E/AndroidRuntime(24526): at java.lang.ClassLoader.loadClass(ClassLoader.java:500)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.app.Instrumentation.newActivity(Instrumentation.java:1022)
07-05 14:38:48.430: E/AndroidRuntime(24526): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1733)
07-05 14:38:48.430: E/AndroidRuntime(24526): ... 11 more
It seems that on runtime android is not able to load the jars that are included.
Was this issue solved. I am getting the same error after follwinng the documented steps http://forum.unity3d.com/threads/71607-Integrating-Unity-and-Eclipse
09-28 17:02:37.522: E/AndroidRuntime(18714): FATAL EXCEPTION: main
09-28 17:02:37.522: E/AndroidRuntime(18714): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.qualcomm.QCARUnityPlayer/com.qualcomm.QCARUnityPlayer.QCARPlayerProxyActivity}: java.lang.ClassNotFoundException: com.qualcomm.QCARUnityPlayer.QCARPlayerProxyActivity in loader dalvik.system.PathClassLoader[/data/app/com.qualcomm.QCARUnityPlayer-1.apk]
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1738)
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1837)
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.app.ActivityThread.access$1500(ActivityThread.java:132)
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1033)
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.os.Handler.dispatchMessage(Handler.java:99)
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.os.Looper.loop(Looper.java:143)
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.app.ActivityThread.main(ActivityThread.java:4196)
09-28 17:02:37.522: E/AndroidRuntime(18714): at java.lang.reflect.Method.invokeNative(Native Method)
09-28 17:02:37.522: E/AndroidRuntime(18714): at java.lang.reflect.Method.invoke(Method.java:507)
09-28 17:02:37.522: E/AndroidRuntime(18714): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
09-28 17:02:37.522: E/AndroidRuntime(18714): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
09-28 17:02:37.522: E/AndroidRuntime(18714): at dalvik.system.NativeStart.main(Native Method)
09-28 17:02:37.522: E/AndroidRuntime(18714): Caused by: java.lang.ClassNotFoundException: com.qualcomm.QCARUnityPlayer.QCARPlayerProxyActivity in loader dalvik.system.PathClassLoader[/data/app/com.qualcomm.QCARUnityPlayer-1.apk]
09-28 17:02:37.522: E/AndroidRuntime(18714): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
09-28 17:02:37.522: E/AndroidRuntime(18714): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
09-28 17:02:37.522: E/AndroidRuntime(18714): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
09-28 17:02:37.522: E/AndroidRuntime(18714): at android.app.Instrumentation.newActivity(Instrumentation.java:1061)