Program: 64778
Project: 64778
Buggy source:
public void startServiceSyncDropbox(){
  if (mDropboxHelper != null && mDropboxHelper.isLinked()) {
    Intent service=new Intent(getApplicationContext(),DropboxServiceIntent.class);
    service.setAction(DropboxServiceIntent.INTENT_ACTION_SYNC);
    service.putExtra(DropboxServiceIntent.INTENT_EXTRA_LOCAL_FILE,MoneyManagerApplication.getDatabasePath(getApplicationContext()));
    service.putExtra(DropboxServiceIntent.INTENT_EXTRA_REMOTE_FILE,mDropboxHelper.getLinkedRemoteFile());
    final ProgressDialog progressDialog=new ProgressDialog(getApplicationContext());
    progressDialog.setCancelable(false);
    progressDialog.setMessage(getString(R.string.dropbox_syncProgress));
    progressDialog.setIndeterminate(true);
    progressDialog.show();
    Messenger messenger=new Messenger(new Handler(){
      @Override public void handleMessage(      Message msg){
        if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_NOT_CHANGE) {
          if (progressDialog != null && progressDialog.isShowing())           progressDialog.hide();
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.dropbox_database_is_synchronized,Toast.LENGTH_LONG).show();
            }
          }
);
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_START_DOWNLOAD) {
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.dropbox_download_is_starting,Toast.LENGTH_LONG).show();
            }
          }
);
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_DOWNLOAD) {
          if (progressDialog != null && progressDialog.isShowing())           progressDialog.hide();
          reloadAllFragment();
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_START_UPLOAD) {
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.dropbox_upload_is_starting,Toast.LENGTH_LONG).show();
            }
          }
);
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_UPLOAD) {
          if (progressDialog != null && progressDialog.isShowing())           progressDialog.hide();
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.upload_file_to_dropbox_complete,Toast.LENGTH_LONG).show();
            }
          }
);
        }
      }
    }
);
    service.putExtra(DropboxServiceIntent.INTENT_EXTRA_MESSENGER,messenger);
    this.startService(service);
  }
}

Fixed version (ground truth):
public void startServiceSyncDropbox(){
  if (mDropboxHelper != null && mDropboxHelper.isLinked()) {
    Intent service=new Intent(getApplicationContext(),DropboxServiceIntent.class);
    service.setAction(DropboxServiceIntent.INTENT_ACTION_SYNC);
    service.putExtra(DropboxServiceIntent.INTENT_EXTRA_LOCAL_FILE,MoneyManagerApplication.getDatabasePath(getApplicationContext()));
    service.putExtra(DropboxServiceIntent.INTENT_EXTRA_REMOTE_FILE,mDropboxHelper.getLinkedRemoteFile());
    final ProgressDialog progressDialog=new ProgressDialog(this);
    progressDialog.setCancelable(false);
    progressDialog.setMessage(getString(R.string.dropbox_syncProgress));
    progressDialog.setIndeterminate(true);
    progressDialog.show();
    Messenger messenger=new Messenger(new Handler(){
      @Override public void handleMessage(      Message msg){
        if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_NOT_CHANGE) {
          if (progressDialog != null && progressDialog.isShowing())           progressDialog.hide();
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.dropbox_database_is_synchronized,Toast.LENGTH_LONG).show();
            }
          }
);
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_START_DOWNLOAD) {
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.dropbox_download_is_starting,Toast.LENGTH_LONG).show();
            }
          }
);
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_DOWNLOAD) {
          if (progressDialog != null && progressDialog.isShowing())           progressDialog.hide();
          reloadAllFragment();
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_START_UPLOAD) {
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.dropbox_upload_is_starting,Toast.LENGTH_LONG).show();
            }
          }
);
        }
 else         if (msg.what == DropboxServiceIntent.INTENT_EXTRA_MESSENGER_UPLOAD) {
          if (progressDialog != null && progressDialog.isShowing())           progressDialog.hide();
          runOnUiThread(new Runnable(){
            @Override public void run(){
              Toast.makeText(MainActivity.this,R.string.upload_file_to_dropbox_complete,Toast.LENGTH_LONG).show();
            }
          }
);
        }
      }
    }
);
    service.putExtra(DropboxServiceIntent.INTENT_EXTRA_MESSENGER,messenger);
    this.startService(service);
  }
}