[求助]下载的matlab7.0不能安装

[行风]

解压后,按安装说明:
1.Get all desired files from the links provided in
"matlab7_web-download.txt".
The minimal set of files requiered is
{Installer.exe, MATLAB70.zip}.
2. Run/Unpack Installer.exe and put all downloaded zip-files
into the new "archives" folder.
3. Rename "java\jar\installer.jar" to "installer.jar.bak" and
put the provided cracked one there.
4. Start "setup.exe" and enter any PLP ;-)
The license-type will be "individual".
但改文件名时不能把相同的文件共存,会出现"installer.jar(2).bak"
安装结果出现:error in install class...的警告语,而不能安装
希望哪位高手能帮忙解决,谢谢!!