FF6LE Rogue CE / Zone Doctor CE

It's a ROM modified by FF3usME (Monster Battle script Hack applied) and by FF6MDE but not by any IPS patches and hasn't been modified by any map editors.

Do you mean the fix FF3usME does when opening the monster editor? Also, did you happen to edit chests with FF6MDE? In any case I'd like to replicate your bug. Your log is identical to the one of a vanilla ROM and everything seems fine as far as offsets loading goes. If you're ok with sending your ROM to me in a pm, I could take a closer look at this.

Edit: I forgot to enable to path choosing button in the settings in the 0.1 build. I'll release a fixed version before going to bed.

Yes it's the fix from FFusME when opening the monster editor. And yes I did happen to edit many chests with FF6MDE.
ROM sent via PM.