Метод Synchronize выдает ошибку

Thr[i].BrsThr = new BrowserThread(true);
Thr[i].BrsThr->FreeOnTerminate=true;
Thr[i].BrsThr->Resume();

for(int i=1; i<n;i++)
  Synchronize(CreateBrowser);

Synchronize(&CreateBrowser);

void __fastcall BrowserThread::CreateBrowser()
{
  TabSheet1 = new TTabSheet(PageControl1);
  TabSheet1->PageControl=PageControl1;
  edtURL = new TEdit(TabSheet1);
  edtURL->Parent = TabSheet1;
  edtURL->Height = 20;
  edtURL->Align = alTop;
  Panels = new TPanel(TabSheet1);
  Panels->Parent=TabSheet1;
  Panels->Height = 25;
  Panels->Align=alBottom;
  NextButtons = new TButton(Panels);
  NextButtons->Parent=Panels;
  NextButtons->Width = 40;
  NextButtons->Caption = "Next";
  NextButtons->OnClick=NextButtonClick;
  NextButtons->Align=alRight;
  NextButtons->Enabled=false;
  WebBrowser1 = new TCppWebBrowser(TabSheet1);
  WebBrowser1->TOleControl::Parent=TabSheet1;
  WebBrowser1->Align=alClient;
  WebBrowser1->Silent=true;
  WebBrowser1->OnNewWindow2= (TCppWebBrowserNewWindow2)&CppWebBrowser1NewWindow2;
  WebBrowser1->OnBeforeNavigate2=(TCppWebBrowserBeforeNavigate2)&CppWebBrowser1BeforeNavigate2;
  PageControl1->ActivePage=PageControl1->Pages[PageControl1->PageCount-1];
}