Android : thread exiting with uncaught exception (group=0x40015560) FATAL EXCEPTION: main

I want to create some application that can search a record from database and when I click one of row that will direct me to the other screen to show me some detail of my row that was I clicked before...

but when I try to click one of list, I got this error threadid=1: thread exiting with uncaught exception (group=0x40015560) FATAL EXCEPTION: main

this is the part of my code...

public void cariInfo(){
    if(etCari.getText().length() == 0){
        //confirm
        Toast.makeText(this, "Please, insert the info", Toast.LENGTH_LONG).show();
        lvCustomList.setAdapter(null);
        jumlah.setText("");
    }else{
        cari = etCari.getText().toString();
        Cursor cursor = dataSource.cariInfo(cari);
        adapter = new SimpleCursorAdapter(this, R.layout.kolom, cursor, 
                new String [] {"server","app","info"},
                new int [] {R.id.server,R.id.app,R.id.info});
        Cursor cursor2 = dataSource.hitungDataInfo(cari);
        cursor2.moveToFirst();
        if(adapter.isEmpty()){
            Toast.makeText(this, "Data not found", Toast.LENGTH_LONG).show();
            lvCustomList.setAdapter(null);
            jumlah.setText("");
        }else{
            lvCustomList.setAdapter(adapter);
            jumlah.setText("Jumlah : "+cursor2.getInt(0));
        }
        etCari.setText("");
    }
}

@Override
public boolean onItemLongClick(final AdapterView<?> adapter, View v, int pos, final long id){
    //tampilkan alert dialog 

    final Dialog dialog = new Dialog(this);
    dialog.setContentView(R.layout.dialogview);
    dialog.setTitle("Choose the action");
    dialog.show();

    final Prob p = (Prob) lvCustomList.getAdapter().getItem(pos);
    viewButton = (Button) dialog.findViewById(R.id.button_view);
    canButton = (Button) dialog.findViewById(R.id.button_cancel);

    //if view button was click
    viewButton.setOnClickListener(
            new OnClickListener()
            {
                @Override
                public void onClick(View v){
                    Toast.makeText(getApplicationContext(),
                              "you are rock, dude!!!"
                              , 50).show();
                    dialog.dismiss();
                }
            });
    canButton.setOnClickListener(
            new OnClickListener()
            {
                @Override
                public void onClick(View v){
                    Toast.makeText(getApplicationContext(),
                              "you are fu**in rock, dude!!!"
                              , 50).show();
                    dialog.dismiss();
                }
            });
    return true;
}

the Logcat:

08-13 11:29:04.795: W/dalvikvm(403): threadid=1: thread exiting with uncaught exception (group=0x40015560)
08-13 11:29:04.795: E/AndroidRuntime(403): FATAL EXCEPTION: main
08-13 11:29:04.795: E/AndroidRuntime(403): java.lang.ClassCastException: android.database.sqlite.SQLiteCursor
08-13 11:29:04.795: E/AndroidRuntime(403):  at com.splatter.sispakprs.CariData.onItemLongClick(CariData.java:133)
08-13 11:29:04.795: E/AndroidRuntime(403):  at android.widget.AbsListView.performLongPress(AbsListView.java:1869)
08-13 11:29:04.795: E/AndroidRuntime(403):  at android.widget.AbsListView.access$600(AbsListView.java:74)
08-13 11:29:04.795: E/AndroidRuntime(403):  at android.widget.AbsListView$CheckForLongPress.run(AbsListView.java:1827)
08-13 11:29:04.795: E/AndroidRuntime(403):  at android.os.Handler.handleCallback(Handler.java:587)
08-13 11:29:04.795: E/AndroidRuntime(403):  at android.os.Handler.dispatchMessage(Handler.java:92)
08-13 11:29:04.795: E/AndroidRuntime(403):  at android.os.Looper.loop(Looper.java:123)
08-13 11:29:04.795: E/AndroidRuntime(403):  at android.app.ActivityThread.main(ActivityThread.java:3683)
08-13 11:29:04.795: E/AndroidRuntime(403):  at java.lang.reflect.Method.invokeNative(Native Method)
08-13 11:29:04.795: E/AndroidRuntime(403):  at java.lang.reflect.Method.invoke(Method.java:507)
08-13 11:29:04.795: E/AndroidRuntime(403):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-13 11:29:04.795: E/AndroidRuntime(403):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-13 11:29:04.795: E/AndroidRuntime(403):  at dalvik.system.NativeStart.main(Native Method)
08-13 11:29:10.386: I/Process(403): Sending signal. PID: 403 SIG: 9

any help will be pleasure :)