Wow, I have been using Open 4.6 and for the last 15 minutes, and it's already made two extremely stupid mistakes... like misunderstanding basic instructions and editing the file in a very silly, basic way. Pretty bad. Never seen this with any model before.
The one bone I'll throw it was that I was asking it to edit its own MCP configs. So maybe it got thoroughly confused?
I dunno what's going on, I'm going to give it the night. It makes no sense whatsoever.