So I've just downloaded the Advanced HM Items plug-in and put the files into the script, but I'm getting error messages when I try and use the item replacements. More specifically, it's detecting that the items correspond with the HM, but the game crashes when I try and use the item. I'll show off the Rock Smash one, but if you need anything, just say so.
Also please note that I am very new to all of this, so sorry if I'm slow or missing something important or obvious.
Plug-in:
https://reliccastle.com/resources/803/