The built-in argument cache (generated by the XLL+ AppWizard) is no longer required and should be removed.
In AvgOpt.h, remove the two lines shaded below.
CopyC++class CAvgOptApp : public CXllApp { public: CAvgOptApp(); // Names public: static LPCSTR m_pszDefName; // Data CXlOperCache m_cache; CString m_strCacheFile; // Menu CXlMenu m_menu; ... };
In AvgOpt.cpp, remove the lines shaded below.
CopyC++BOOL CAvgOptApp::OnXllOpenEx()
{
    // Calculate the full path of the cache data file.                            
    // This is the same as the add-in, with the extension "dat".                  
    m_strCacheFile = CXllApp::GetXllName();                                       
    m_strCacheFile = m_strCacheFile.Left(m_strCacheFile.GetLength() - 3) + "dat"; 
    // Restore cache, ignoring failure                                            
    m_cache.Restore(m_strCacheFile);                                               
 
    // Set up menu
    m_menu.SetTexts("&AvgOpt");
    m_menu.AddItem("&Clear cache", "AvgOptClearCache");
    m_menu.Create();
    return TRUE;
}
void CAvgOptApp::OnXllClose()
{
    // Save cache                          
    m_cache.Save(m_strCacheFile);           
 
    // Delete menu
    m_menu.Destroy();
}
      Use the XLL+ Function Wizard to switch off the argument cache for the AvgOptValue function in AvgOpt.cpp:
      
    
This will remove all of the generated code within the add-in function that supports the argument cache.