windbg 编译问题--请高手帮助

我编译WINDBG 6.9 SDK提供的插件simplext，发现总是编译不过去，编译方法完全是按照WINDBG文档提供的，步骤如下：

E:\WINDDK\3790>set DBGSDK_INC_PATH=e:\windbg\sdk\inc

E:\WINDDK\3790>set DBGSDK_LIB_PATH=e:\windbg\sdk\lib

E:\WINDDK\3790>cd e:\simplext

E:\simplext>build -cZMg
BUILD: Adding /Y to COPYCMD so xcopy ops won't hang.
BUILD: Using 2 child processes
BUILD: Object root set to: ==> objchk_wnet_x86
BUILD: Compile and Link for i386
BUILD: Examining e:\simplext directory for files to compile.
BUILD: Compiling e:\simplext directory
BUILD: nmake.exe /c BUILDMSG=Stop. -i NTTEST= UMTEST= NOLINK=1 386=1 failed - rc = 2
BUILD: Linking e:\simplext directory
BUILD: nmake.exe /c BUILDMSG=Stop. -i LINKONLY=1 NOPASS0=1 NTTEST= UMTEST= MAKED LL=1 386=1 failed - rc = 2
BUILD: Done


请高手分析到底是什么原因？？？