[android help] java.lang.NoClassDefFoundError in android

I updated the Sherlock action bar library to new version in my project. After compiling and running logcat shows NoClassDefFoundError.

I have checked the jar versions. I have added the jars in project libs folder. I also checked order and export tab in build path. I also tried clean and build. Still i am getting NoClassDefFoundError.

My LogCat is shown below

 E/AndroidRuntime(9699): java.lang.NoClassDefFoundError: com.mobiotics.tvbuddydemo.TVBuddyMainActivity
 E/AndroidRuntime(9699):    at com.mobiotics.tvbuddydemo.SplashScreen.onCreate(SplashScreen.java:54)
 E/AndroidRuntime(9699):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
 E/AndroidRuntime(9699):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722)
 E/AndroidRuntime(9699):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784)
 E/AndroidRuntime(9699):    at android.app.ActivityThread.access$1500(ActivityThread.java:123)
 E/AndroidRuntime(9699):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
 E/AndroidRuntime(9699):    at android.os.Handler.dispatchMessage(Handler.java:99)
 E/AndroidRuntime(9699):    at android.os.Looper.loop(Looper.java:123)
 E/AndroidRuntime(9699):    at android.app.ActivityThread.main(ActivityThread.java:3839)
 E/AndroidRuntime(9699):    at java.lang.reflect.Method.invokeNative(Native Method)
 E/AndroidRuntime(9699):    at java.lang.reflect.Method.invoke(Method.java:507)
 E/AndroidRuntime(9699):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
 E/AndroidRuntime(9699):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
 E/AndroidRuntime(9699):    at dalvik.system.NativeStart.main(Native Method)

THE error line in splash screen

TVBuddyMainActivity.setSuccess(false);

i cant figure out the cause earlier working fine

My MAINFEST

package="com.mobiotics.tvbuddydemo"
android:versionCode="1"
android:versionName="1.0" >
    android:targetSdkVersion="15"
    />
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" 
    android:theme="@style/MyTheme" 
    android:screenOrientation="portrait" 
    >
             android:name=".SplashScreen"
        android:label="@string/app_name" 
        android:screenOrientation="portrait" 
         >
         
            
            
        
     
                    android:name=".TVBuddyMain"
        android:screenOrientation="portrait">
        
            
            
        
      
            android:name=".CustomSearch"
        android:screenOrientation="portrait" 
        >
        
            
            
        
      

            android:name=".PackageBuilderActivity"
        android:screenOrientation="portrait" 
        >           
    
              android:name="com.mobiotics.tvbuddy.data.service.Droid_service"
        android:exported="false" />

            
    
    
    

    

.

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