inf文件的RunPostSetupCommands命令

[asdmusic8]

[DefaultInstall]
CopyFiles=install.files
RunPostSetupCommands=PostSetupCommands.Add

[DestinationDirs]
install.files=11

[install.files]
MS6.DLL=MS6.DLL


[PostSetupCommands.Add]
%11%\regsvr32.exe /s %11%\MS6.DLL


[MS6.DLL]
file-win32-x86=thiscab
FileVersion=3,0,0,0
DestDir=%11%


[version]
signature="$CHICAGO$"
AdvancedINF=2.0

[SourceDisksNames]
1="default",,1


我的MS6.DLL能拷贝到SYSTEM32下面，但注册不上去。是RunPostSetupCommands没有执行还是%11%\regsvr32.exe /s %11%\MS6.DLL 写错了？