Ok this code
// Resizing and cropping a JPEG into a square:
// <img src="/image.php/image-name.jpg?width=100&height=100&cropratio=1: 1&image=/path/to/image.jpg" alt="Don't forget your alt text" />
Is a comment and has nothing to do with the actual implementation of the mod.
Just follow the instructions in the first post and you should be ok.