I'm getting a lot of Unity Editor errors thrown whenever I try to work with one of your sliced sprites. The sliced sprite in question is 1720 x 250 - more or less. The vertical scale goes up a bit more sometimes, but it's in that region. When I use a simple tween script to adjust the scale of the object to make it appear and disappear, I get these errors thrown:
!IsFinite(outDistanceForSort)
!IsFinite(outDistanceAlongView)
They are repeated a number of times, but those are the only two different errors.
I'm guessing that something in your editor scripts is trying to calculate something and ends up with a NAN, thus throwing the Editor error.
I've searched the forum and didn't find much. I found two threads which said Unity doesn't like the very large scales that NGUI encourages us to use. So I cut my virtual resolution down by 1/4, but the errors are still there. I also found some references suggesting that NGUI doesn't like negative scales, but I don't have anything scaled to a negative number, so I don't think that's it.