在生成组件时，点击build菜单中的com object选项之后，报错如下:
Error using==>fileattrib
'attrib'不是内部或外部命令，也不是可运行的程序或批处理文件。
build status区域中内容如下
Building COM object...
mcc -M -silentsetup -d 'd:/MATLAB7/work/nn/src' -B 'ccom:nn,nn,1.0' -i 'D:/MATLAB7/work/Untitled3.m'
To get started, select <a href="matlab: doc">MATLAB Help</a> or <a href="matlab: demo matlab">Demos</a> from the Help menu.
The -i switch is no longer supported; the include exported interfaces behavior
is applied to every compilation.
Warning: (PM): Duplicate directory name: D:/MATLAB7/work.
mwcomtypes.idl
oaidl.idl
objidl.idl
unknwn.idl
wtypes.idl
ocidl.idl
oleidl.idl
servprov.idl
urlmon.idl
msxml.idl
nn_idl.idl
oaidl.idl
objidl.idl
unknwn.idl
wtypes.idl
ocidl.idl
oleidl.idl
servprov.idl
urlmon.idl
msxml.idl
mwcomtypes.idl
Creating distrib directory.
Moving files to distrib.
请各位帮我看看问题出在什么地方，要怎样解决，跪谢