ArrayAdapter 를 상속받아서 이미지 밑에 텍스트를 넣으려고 하는데요,,

java.lang.ClassCastException: android.widget.AbsListView$LayoutParams  가 나면서 죽습니다..
그밑에 at android.widghet.LinearLayout.measureVertical(LinearLayout.java) 라고 나오네요
레이아웃 구성에 문제가 있는걸까요 ?? (리니어레이아웃 안에 그리드뷰를 넣었습니다..)
젤 위만 보면 캐스팅 관련해서 오류가 난거 같은데. 문제가 뭘까요?? 
해결이 안되네요..ㅠㅠ

아래는 Adapter 클래스입니다..


public class CustomArrayAdapter extends ArrayAdapter {
 private Context mContext;
 private ArrayList mList; 
 public CustomArrayAdapter(Context context, int textViewResourceId, ArrayList list) {
  super(context, textViewResourceId, list);
  mContext = context;
  mList = list;
 }
 @Override
 public View getView(int position, View convertView, ViewGroup parent) {  
  if (convertView == null) {   
   LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);   
   convertView = inflater.inflate(R.layout.imageview, null);  
  }
  
  Image image = (Image) mList.get(position);
  if (image != null) {   
   ImageView imageView = (ImageView) convertView.findViewById(R.id.ImageView01);
   TextView textView = (TextView) convertView.findViewById(R.id.TextView01);
   
   if (imageView != null) {    
    imageView.setImageResource(image.getmThumbId());    
    imageView.setLayoutParams(new GridView.LayoutParams(50, 50));    
    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);    
    imageView.setPadding(5, 5, 5, 5);    
   }
   
   if (textView != null) {    
    textView.setText(image.getmThumbName());    
   }
  }
  
  return convertView;
 }
}호출하는 메인클래스이구요
public class HomeworkTest extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        ArrayList mList = new ArrayList();
        Image image1 = new Image(R.drawable.lambor, "람보르기니");
        Image image2 = new Image(R.drawable.ferrari, "페라리");
        Image image3 = new Image(R.drawable.maserati, "마세라티");
        
        mList.add(image1);
        mList.add(image2);
        mList.add(image3);
        
        CustomArrayAdapter adapter = new CustomArrayAdapter(this, R.layout.imageview, mList);
        
        GridView gridview = (GridView) findViewById(R.id.GridView01);        
        gridview.setAdapter(adapter);        
    }
}