Had an issue at the Dreadbone Shelf (level 22-24) - the mesh would get hung up on some rocks on the road on the approach at about 5309,5208 - not the big boulders, but some tiny little pebble crap next to them. They don't look like much but for some reason the bot couldn't handle it.
I've adjusted the mesh to go around these rocks so it doesn't flip out as it previously did - it would, essentially, spin around a lot until it figured out how to get off the tiny rock in the way, and it being on the main path it would be apparent to anyone riding by that I am a bot.
I've attached the new mesh - the change in the pathing around the rocks are the ONLY change from the original in this thread - so if you too are having this issue, give this one a try.
Hope you don't mind me posting this, Hawker
//edit below:
I've actually made a change to the level 24-25 corpse run path now as well. I found it was getting stuck on a table just after the well in granite falls, so now it steers clear of that table and walks along the middle of the road instead.
//edit again:
I added the mesh to the soul healer to cover the last section in the path as well as the coordinates for it. I found that if it needed to soul heal whilst grinding out mobs in this zone it would run all the way back to the previous zone for it. Quite annoying, so here it is.