@jdryyz
If you are running something higher than 1.3, you have to load 64Door off the floppy. It has some sort of magic that loads 1.3 libs or something. You can run it off an A1200 on 3.1, but only off the floppy drive on boot.
What's cool about it - if you run 1.3 - is you can even install it to the HDD. As such, I wound up creating a custom tool icon for it, so I don't have to look at the wrench.
Good times. 64Door is awesome. And if you're hitting BBSes that are hosted on C64s - essential IMO. It looks great in 80 col mode, too, if that BBS supports it (like off a 128).