Calling notifyDataSetChanged() throws exception

I have a ListView that I'm binding to an adapter. The adapter is a protected member of my main class. I have a listener thread that receives data and updates the source list for my adapter. When I call the adapter's notifyDataSetChanged() method, an exception is thrown:

Runtime Exception: PhoneLayoutInflater(LayoutInflater).inflate(int, ViewGroup, boolean) line: 322

I've read that the notifyDataSetChanged() method has to be called on the UI thread, and I'm doing that. In fact, just to be sure, I even update the ListView's data source on the UI thread. All I do in my listener thread is update a protected member that houses the data. Here's an example of what I'm doing (note that I don't have the part of the code that calls the AsyncTask, but it's fired from a listener):

public class main extends Activity() {

 protected LinkedList<HashMap<String, String>> adapterDataList = new LinkedList<HashMap<String, String>>();
 protected MyDataObject dataObject;
 protected SimpleAdapter dataAdapter;

 @Override
 public void onCreate(Bundle savedInstanceState) {

     //call parent oncreate
     super.onCreate(savedInstanceState);

  //display the main form
  setContentView(R.layout.main);

  //get a handle on the score list view elements
  ListView dataList = (ListView)(findViewById(R.id.datalist));

  //link the adapter and the data source
  dataAdapter = new SimpleAdapter开发者_Python百科(this, adapterDataList, R.layout.row, new String[]{"name","address"}, new int[]{R.id.username,R.id.address});

  dataList.setAdapter(dataAdapter);

 }

 protected void refreshData() {
  adapterDataList.clear();
  Iterator<MyData> iter = MyDataObject.iterator();
  while(iter.hasNext()) {
   HashMap<String, String> item = new HashMap<String, String>()
   item.put("name", iter.name);
   item.put("address", iter.address);
   adapterDataList.add(item);
  }

  dataAdapter.notifyDataSetChanged();
 }

 private class DataTask extends AsyncTask<Data, Void, Data> {
  protected void onPostExecute(Data data) {
   dataObject = data;
   runOnUiThread (new Runnable() { public void run() {
    refreshScores();
   }});
  }
 }

 ...
}

Does anyone have any pointers or ideas as to why I'm getting this exception? Any help is much appreciated.

edit Here are the layout files, as requested: main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:ptl="http://schemas.android.com/apk/res/com.mod0.pubtrivialive"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/datalistcontainer">

    <ListView android:id="@+id/datalist" 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

</LinearLayout>

row.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="horizontal"
  android:paddingBottom="6dip"
  android:paddingTop="4dip">

  <TextView android:id="@+id/name"
  android:layout_width="80dip"
  android:layout_height="wrap_content" />

  <TextView android:id="@+id/address"
  android:layout_height="wrap_content"
  android:layout_weight="1" />

</LinearLayout>

This doesn't look right dataList.clear();. Are you sure you're meaning to call clear on dataList and not adapterDataList?