NEC 5540A not recognized, can't reverse IDE

Hi, I just bought this NEC model and the comments suggested trying to use the Liggy and Dee’s IDE reverse program:

But when I run the program located here, it says, “Target Optiarc DVD drive is not found correctly.”

Do I have to do something else first?

In that case, will I have this same problem with another slimline drive? Anybody have a recommendation?