Probably a bug somewhere. I opened your arena.scn last night and I was able to export it...give me a few days to finish the rewrite of the region code and perfect it. I think it will make things a lot more stable.

WC

Ahhhh. I found the problem. The way I was implementing it was causing a crash if you had more than 32767 vertices in your mesh. This is easily possible with a large zone. Not to worry, my rewrite is almost complete and it's a *lot* cleaner and better (it has a lot more flexibility in what it can support, too). I'm pretty confident I can have a working OpenZone 2.0 up tomorrow.

Wind