I have those docs downloaded for reference.
This afternoon (here in Florida,US) I sucessfully created a mission with two operational cranes and two Sherpas.
So far I haven't noticed anything beyond it getting farkled on what's the cockpit view, the first crane created is not a cockpit view when you ask for it. The last crane created has a proper cockpit view.
The key was to create the cesond crane object and IMMEDIATELY go edit the object and change its name, if you don't some really wierd things happrn as I imagine the engine uses that name and boy can it get it's pants gnarled up from the players perspective. It's doing exactly what it should but it doesn't present itself to the player well.
Some things I've observed, if your container pointer arrows don't show up in-play your xml is farkled, had a working mission then I did something that hosed it. It does appear to be very sensitive and unforgiving.
Don't rely on on "reset mission" to reset mission, in SS2008 go back to main menu then reload the mission. While it appears to work I've actually observed artifacts from a previous missions. Once my channel waypoints all became containers
Edit/Name your objects, helps in debugging
that's all for now, will post a link
Rob