Could this be a part of the problem?
[taskbar.texture]
[Vista.ShellButtons]
Image=Frosted\command bar buttons new2.tga
TopHeight=7
BottomHeight=7
LeftWidth=7
RightWidth=7
NormalColour=0
DisabledColour=5
UseColourSettings=1
Trans=0
PerPixel=0
[Explorer.SelectionImage]
Image=Frosted\exp listview select img.tga
Trans=1
PerPixel=1
TopHeight=7
BottomHeight=3
LeftWidth=3
RightWidth=3
PreMultipliedAlpha=0
Vert=1
GlyphVert=1
[taskbar.texture] is 'empty'
[Vista.ShellButtons], [Explorer.SelectionImage] and all sections after this looks for images in a non-existing folder. (Frosted)
Doc gave me a copy yesterday for testing. "Blew up" an application and left the taskbar and startmenu unskinned (Win98 style).
My OS is Vista 64 bit.