problem extended dll with adddoctemplate()

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MFC

CSingleDocTemplate* pDocTemplate;
pDocTemplate = new CSingleDocTemplate( 
IDR_MAINFRAME,
RUNTIME_CLASS(CHTMLEditDoc),
RUNTIME_CLASS(CMainFrame),       // main SDI frame window
RUNTIME_CLASS(CHTMLEditView));
if (!pDocTemplate)
{ 
    MessageBox(NULL,NULL,0,0);
    //return FALSE;
}  
HINSTANCE hClientResources = AfxGetResourceHandle(); 
AfxSetResourceHandle(::GetModuleHandle("pgdtg.dll")) 
Phan_len_lich_dialog dlg ; 
dlg.DoModal(); 
AfxSetResourceHandle(hClientResources); 


AddDocTemplate(pDocTemplate); 

dlg shows up correctly , but adddoctemplate create "Failed to create empty document" . I am sure that has problem with extended dll pgdtg.dll when is used with adddoctemplate() . pgdtg.dll is extended mfc dll and this test with dialog based project . pgdtg.dll and pgdtg.lib are copied to release folder as normal .