||I get the famous "Unexpected TopoEngine Error" quite often. I'm convinced it's a memory thing. When I get the error, I shut down my computer and then restart my process from scratch and it ususally works fine then.
I was hoping 9.2 was going to fix these "memory" related issues, but I guess not.
Wish I had a better solution but that's the only way I've been able to get around the error.