There's a 6+ page thread on the 64x64 bug
There is a workaround for it - Check the last 3 pages of that thread for the workaround
Basically, physics stopped working on NPCs, along the X axis, outside of 64x64 cells ... but like I say, workaround found
As for the tutorial, if you can find the original thread, I think someone has done one (I don't know using which tools etc) ... Last time I looked at the thread a video tutorial had been posted to it.
I've looked at them...they're talking about Havok problems on worldspaces above a certain size...but I'm NOT asking to make a LARGE worldspace, and Havok problems with NPCs don't even become an issue IF YOU CAN'T GET ANY KIND OF WORLDSPACE MADE AT ALL.
When I try to make even a "Small" worldspace (Presumably below the size of this "Havok" bug) and tell it to use a particular location as it's "parent" location, it doesn't load the TERRAIN.
Got that? Terrain. Nothing whatever to do with NPCs, Havok Behavior, or anything like that. Just the terrain at the location I picked. I posted the steps I followed in my attempts repeatedly, and got zero help figuring out how to get a parentspace's terrain to load on even the smallest worldspace.
Again, I don't want to make my own terrain, I want to know how to load terrain from the existing regions. I dont' want to make a BIG worldspace, I want to make ANY worldspace that correctly loads terrain, so I can figure out THAT functionality.
Got it now?