Program: 46182
Project: 46182
Buggy source:
public void initialize(String username,Properties props) throws ProcessingException {
  this.username=username;
  File userDir=new File(ClientContext.getUserDirectory("String_Node_Str"),username);
  ClientContext.setUserDirectory(userDir);
  ClientContext.setRendererType(RendererType.NONE);
  String serverURL=props.getProperty("String_Node_Str");
  if (serverURL == null) {
    throw new ProcessingException("String_Node_Str");
  }
  LoginManager.setLoginUI(new ClientSimLoginUI(username,props));
  LoginManager.setPluginFilter(new BlacklistPluginFilter());
  JmeClientMain.setFrame(new FakeMainFrame());
  try {
    ServerSessionManager mgr=LoginManager.getInstance(serverURL);
    session=mgr.createSession(new SessionCreator<CellClientSession>(){
      public CellClientSession createSession(      WonderlandServerInfo serverInfo,      ClassLoader loader){
        CellClientSession ccs=new CellClientSession(serverInfo,loader){
          @Override protected CellCache createCellCache(){
            CellCacheBasicImpl impl=new CellCacheBasicImpl(this,getClassLoader(),getCellCacheConnection(),getCellChannelConnection()){
              @Override protected CellRenderer createCellRenderer(              Cell cell){
                return null;
              }
            }
;
            getCellCacheConnection().addListener(impl);
            return impl;
          }
        }
;
        ccs.addSessionStatusListener(Client3DSim.this);
        final LocalAvatar avatar=ccs.getLocalAvatar();
        avatar.addViewCellConfiguredListener(new ViewCellConfiguredListener(){
          public void viewConfigured(          LocalAvatar localAvatar){
            userSim.start();
          }
        }
);
        userSim=new UserSimulator(avatar);
        return ccs;
      }
    }
);
  }
 catch (  IOException ioe) {
    throw new ProcessingException(ioe);
  }
catch (  LoginFailureException lfe) {
    throw new ProcessingException(lfe);
  }
}

Fixed version (ground truth):
public void initialize(String username,Properties props) throws ProcessingException {
  this.username=username;
  File userDir=new File(ClientContext.getUserDirectory("String_Node_Str"),username);
  ClientContext.setUserDirectory(userDir);
  ClientContext.setRendererType(RendererType.NONE);
  String serverURL=props.getProperty("String_Node_Str");
  if (serverURL == null) {
    throw new ProcessingException("String_Node_Str");
  }
  LoginManager.setLoginUI(new ClientSimLoginUI(username,props));
  LoginManager.setPluginFilter(new BlacklistPluginFilter());
  JmeClientMain.setFrame(new FakeMainFrame());
  try {
    ServerSessionManager mgr=LoginManager.getSessionManager(serverURL);
    session=mgr.createSession(new SessionCreator<CellClientSession>(){
      public CellClientSession createSession(      ServerSessionManager sessionMgr,      WonderlandServerInfo serverInfo,      ClassLoader loader){
        CellClientSession ccs=new CellClientSession(sessionMgr,serverInfo,loader){
          @Override protected CellCache createCellCache(){
            CellCacheBasicImpl impl=new CellCacheBasicImpl(this,getClassLoader(),getCellCacheConnection(),getCellChannelConnection()){
              @Override protected CellRenderer createCellRenderer(              Cell cell){
                return null;
              }
            }
;
            getCellCacheConnection().addListener(impl);
            return impl;
          }
        }
;
        ccs.addSessionStatusListener(Client3DSim.this);
        final LocalAvatar avatar=ccs.getLocalAvatar();
        avatar.addViewCellConfiguredListener(new ViewCellConfiguredListener(){
          public void viewConfigured(          LocalAvatar localAvatar){
            userSim.start();
          }
        }
);
        userSim=new UserSimulator(avatar);
        return ccs;
      }
    }
);
  }
 catch (  IOException ioe) {
    throw new ProcessingException(ioe);
  }
catch (  LoginFailureException lfe) {
    lfe.printStackTrace();
    throw new ProcessingException(lfe);
  }
}