So, earlier this week I decided to open up Fire Emblem: New Mystery of the Emblem in a Hex editor and see what I could learn from it, and actually learned a good amount of stuff for items. So I decided to try and make a Nightmare Module, with the help of some of the SD Modules, for an Item Editor to make it easier for me to work with. But I ran into this error whenever I tried to use it and, after several hours of trying to figure it out myself, turned to here for help. After I got this module to work I was planning on learning about unit data in the hex editor and then making a module for that to also help, so any help in this regard will be welcomed gladly.
Here's a dropbox link that contains a .rar file with the module that I tried to make and text files that go along with it.
https://www.dropbox.com/s/c08tv657lp9es58/FE12 Item Editor.rar?dl=0
Thank you for any help