AddThis

Java.lang.verify Error

While i am trying to integrate addThis with my project,i got the following errors.I closely followed the steps in tutorial in home page.Can anyone tell me why this Error occurs?

07-20 17:02:09.149: W/dalvikvm(3197): VFY: unable to resolve static method 25: Lcom/addthis/core/AddThis;.presentAddThisMenu (Landroid/content/Context;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
07-20 17:02:09.149: W/dalvikvm(3197): VFY: unable to resolve static method 27: Lcom/addthis/core/AddThis;.shareItem (Landroid/content/Context;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
07-20 17:02:09.149: W/dalvikvm(3197): VFY: unable to resolve exception class 45 (Lcom/addthis/error/ATDatabaseException;)
07-20 17:02:09.149: W/dalvikvm(3197): VFY: unable to find exception handler at addr 0xc
07-20 17:02:09.149: W/dalvikvm(3197): VFY: rejected Lcom/addthis/demo/HomeActivity;.onClickedDigg (Landroid/view/View;)V
07-20 17:02:09.149: W/dalvikvm(3197): VFY: rejecting opcode 0x0d at 0x000c
07-20 17:02:09.149: W/dalvikvm(3197): VFY: rejected Lcom/addthis/demo/HomeActivity;.onClickedDigg (Landroid/view/View;)V
07-20 17:02:09.149: W/dalvikvm(3197): Verifier rejected class Lcom/addthis/demo/HomeActivity;
07-20 17:02:09.159: W/dalvikvm(3197): Class init failed in newInstance call (Lcom/addthis/demo/HomeActivity;)
07-20 17:02:09.159: W/dalvikvm(3197): threadid=1: thread exiting with uncaught exception (group=0x40020ac0)
07-20 17:02:09.159: E/AndroidRuntime(3197): FATAL EXCEPTION: main
07-20 17:02:09.159: E/AndroidRuntime(3197): java.lang.VerifyError: com.addthis.demo.HomeActivity
07-20 17:02:09.159: E/AndroidRuntime(3197): at java.lang.Class.newInstanceImpl(Native Method)
07-20 17:02:09.159: E/AndroidRuntime(3197): at java.lang.Class.newInstance(Class.java:1429)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.os.Handler.dispatchMessage(Handler.java:99)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.os.Looper.loop(Looper.java:123)
07-20 17:02:09.159: E/AndroidRuntime(3197): at android.app.ActivityThread.main(ActivityThread.java:4627)
07-20 17:02:09.159: E/AndroidRuntime(3197): at java.lang.reflect.Method.invokeNative(Native Method)
07-20 17:02:09.159: E/AndroidRuntime(3197): at java.lang.reflect.Method.invoke(Method.java:521)
07-20 17:02:09.159: E/AndroidRuntime(3197): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-20 17:02:09.159: E/AndroidRuntime(3197): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-20 17:02:09.159: E/AndroidRuntime(3197): at dalvik.system.NativeStart.main(Native Method)