Can I ask you something ? I would like to edit some map or maybe made a first person rpg myself, but the script talk about some dedicated editor and the project marta 1.0, but I can't figure to find it online. Do you have some download link or something ? :)
Sadly I don't think I have access to the editor anymore (Its been a few years and I was developing the game between two separate computers). But if you wanna try and scan the internet for it it should be called "RPG Maker VX Ace FPLE script" or something along those lines.
It should have both the script and separate editor exe