When installing Ementool,
if you see file listing with this file, installation won't work.

You see the file list if you have WINRAR or similar program installed which steals jar files to itself.
The EmentoolLiteInstall.jar should be started with Java, not with any other program.

The simplest way is to uninstall WINRAR and re-install Java.
Or select from windows settings that Java should open .jar files.