Has anyone ever gotten Surface.GetPalette to work?

[Sastraxi]

I've tried EVERYTHING, and nothing works. This is the code that's loading a 256-colour bitmap, in a 256-colour 640x480 fullscreen window:

'Set Logo surfaces.
    dLogo.lFlags = DDSD_HEIGHT Or DDSD_WIDTH Or DDSD_CAPS
    dLogo.ddsCaps.lCaps = DDSCAPS_OFFSCREENPLAIN
    dLogo.ddpfPixelFormat.lFlags = DDPF_PALETTEINDEXED8
    dLogo.lWidth = 640
    dLogo.lHeight = 480
    
    Set Logo = DD7.CreateSurfaceFromFile(App.Path & _
    "\resource\logo.bmp", dLogo)
    
    'Get Palette
    Set SavePalette = Logo.GetPalette
    SavePalette.GetEntries 0, 256, SavePalEntries()

And it always gives me "Automation Error | Unspecified Error" highlighting the GetPalette method.

Help...?