Long list of Minerals

Hey im having trouble with my mineral random generator. i have a long
lists of 360 minerals. when i enter my program into cmd.exe, which i am
using to run my program, this is what i get…

We can’t really help you without seeing Minerals Main.rb, but if you
find the position of the first reported error, and post just that line
and a couple of lines either side, it will probably be clear.