我的mathematica的安装目录文件名被我修改了以后，该软件就没有办法运行。我将其卸载以后在次安装，居然安装不上去。谁可以教我怎么去解决啊？在下先谢谢大家了！！！
提示信息如下：
1、Error:-1603 Fatal error during installation.
Consult Windows Installer Help (Msi.chm) or MSDN for more information.
2、Setup could not find a file on the specified path or disk.
Please check that the proper disk in inserted or specify a new path.
Unable to locate file
C;\Users\lenovo\AppData\Local\Temp\pfrFB90.tmp\Mathematica5.msi.
3、Error 1706.NO valid source could be found for product Mathematica 5. The Windows Installer cannot contineuse.
