Nilclass error is always syntax related. Don't listen to the line number. it is almost always bullshit and not related to the error. that is just the line of the script that was trying to run when the error occured. The error is more then likely something like a , or \| script code that broke due to a space where it doesn't belong. Easy fix, you just need to go into the event and find the space and eliminate it.Thank you for the translations thus far.
There seems to be a transcript error when you interact with the cat(s) for more than several times. See the attached picture for the error code: nil: NilClass
line 549
Not sure if this will affect any quests or the story progression itself.
I forgot to ask, this is for latest version yes ?full mtl... its not that bad, since you can still easily follow the story. as always, open it with "mtool".