一直以来，都有这样的问题存在。
当上传文件时，如果有相同文件名的文件存在，有如下的error message出现
Error in tempfile() using \tmp\XXXXXXXXXX: Parent directory (\tmp\) is not a directory at C:\intranet\mt\lib/MT/App/CMS.pm line 3883这里的C:\intranet\mt\是我的系统目录。
昨天仔细看了一下mt.cfg配置文件，找到下面：
# When processing uploaded files, if Movable Type notices that the file you
# uploaded already exists, it will allow you to overwrite the original file,# by first asking for your confirmation. To do this, MT needs to write the
# uploaded data to a temporary file. That temporary file is stored in the
# directory specified by the TempDir setting; the value defaults to /tmp.
#
#TempDir /tmp/
就修改为：
TempDir c:\intranet\mt\tmp\这里要用绝对路径，因为是Windows Server 的缘故。
现在再上传有相同文件名的文件时，会问你要不要覆盖原来的文件。
如果你有同样的问题，照样修改，就可以了。