Damn it, its been years and I was hoping to come back to this place and find someone manually translated the game... oh well, I'll take a machine translation. Its better than 'nothing' I guess.
Edit: So, I played this for a bit, and as soon as I get to the ruined village with the bandits surrounding that one catgirl, I get the issue listed in the picture below the moment I either start reading the book inside the house that has an ! marked above it, and also if I lose the fight against the bandits and get a few dialogue messages into the lose scene. Does anyone know how to fix this?
I'm not really all that knowledable about rpg maker scripting... but i do have a programming background and with some quick googleing i'd say it's most likely that a name or term or something got changed by the translation which is causing that exception.
As i'm way too lazy to actually spend the time to really read into the scripts and the cause of it i solved it by simply commenting out that part of the code in the script. This causes some other funky behaviour with the text output (i.e. i got numbers in brackets around some parts of the text now, for example "[0] -insert random text here- [3]"). personally i can live with that so i won't go deeper into the matter.
I can't guarantee that it won't cause different problems down the line but here are the changed file (i do hope that you only need the scripts file). just extract them into your Data folder and you should be good to go.