Title bar issue

i am developing an application that uses the commandbar with ribbon.
i have successfully created the ribbonbar style on my MDI form i am also using SkinFramework
the problem is that i have inserted a code on the unload of MDI so that whenever the user tries to close the form it would always ask if he/she wants to close it. i am using msgbox, whenever the msgbox pops out to ask the user the title bar seems revert to the theme of the operating

please help me...

here is the mdi form without the msgbox



here is the mdi form with the msgbox as you can see the bibbin was been broken and the old title bar is shown

the ff: line of code is from my main mdi form

    createRibbon

    
    Dim StatusBar As StatusBar
    Set StatusBar = CommandBars.StatusBar
    StatusBar.Visible = True
    
    StatusBar.AddPane 0
    StatusBar.AddPane 901
    StatusBar.AddPane 902
    StatusBar.AddPane 903
    
    'RibbonBar.EnableFrameTheme
    
    CommandBars.Options.KeyboardCuesShow = xtpKeyboardCuesShowWindowsDefault
    'RibbonBar.CommandBars.EnableOffice2007Frame True
    'CommandBars.EnableCustomization True
    CommandBars.EnableOffice2007Frame True
    SkinFramework.RemoveWindow Me.hWnd
    
    'CommandBars.SetMDIClient Me.hwnd

i really dont know what is happening. i thought is was the effect of the bricopack i have installed for my pc but ive tried it on other computer it works just as the same

the ff codes are from my skin on the main function

    Dim Descriptions As SkinDescriptions
    Set Descriptions = MDIMain.SkinFramework.EnumerateSkinDirectory(App.Path + "..\..\..\Styles", True)

    Dim Des As SkinDescription
    For Each Des In Descriptions
        Debug.Print Des.Name & " - " & Des.Path
    Next


    MDIMain.SkinFramework.LoadSkin App.Path + "\Vista.cjstyles", ""
    MDIMain.SkinFramework.LoadSkin App.Path + "\Office2007.cjstyles", ""
    MDIMain.SkinFramework.ApplyWindow MDIMain.hWnd
    MDIMain.SkinFramework.ApplyOptions = MDIMain.SkinFramework.ApplyOptions Or xtpSkinApplyMetrics

i also tried disabling the skin but i didn't work

thank you so much for your help