New Post: why getOffset always fails？

I think my symbol is ok

lkd> lmvm nt
start end module name
804d8000 806d0480 nt (pdb symbols) c:\windows\symbols\ntkrnlpa.pdb\30B5FB31AE7E4ACAABA750AA241FF3311\ntkrnlpa.pdb

Loaded symbol image file: ntkrnlpa.exe
Image path: ntkrnlpa.exe
Image name: ntkrnlpa.exe
Timestamp:        Mon Apr 14 02:31:06 2008 (4802516A)
CheckSum:         002050D3
ImageSize:        001F8480
File version:     5.1.2600.5512
Product version:  5.1.2600.5512
File flags:       0 (Mask 3F)
File OS:          40004 NT Win32
File type:        1.0 App
File date:        00000000.00000000
Translations:     0804.04b0
CompanyName:      Microsoft Corporation
ProductName:      Microsoft(R) Windows(R) Operating System
InternalName:     ntkrnlpa.exe
OriginalFilename: ntkrnlpa.exe
ProductVersion:   5.1.2600.5512
FileVersion:      5.1.2600.5512 (xpsp.080413-2111)
FileDescription:  NT Kernel & System
LegalCopyright:   (C) Microsoft Corporation. All rights reserved.

lkd> ln PsLoadedModuleList
(80554fc0) nt!PsLoadedModuleList | (80554fe0) nt!PsLoadedModuleResource
Exact matches:

nt!PsLoadedModuleList = <no type information>

lkd> !pycmd
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)

getOffset("PsLoadedModuleList")
Traceback (most recent call last):
File "<console>", line 1, in <module>
SymbolException: failed to find module for symbol: PsLoadedModuleList

and I tested in a clear xp sp3