Ruby无法加载这样的文件--ftools（加载错误）

I'm a complete Ruby newbie and all I want to do is just run a legacy ruby script (that too an open source one by Erik Veenstra). I have a Windows batch script that runs it basically that I am trying to execute. I installed Ruby on my computer, allowed it to set paths, and I tried to run it and here's the error I got: I'm a complete Ruby newbie and all I want to do