Hello, Setting the alpha property (to any value other than 0) of a MovieMaterial cause an exception during rendering.
Looking through the code I noticed updateRenderBitmap() was overriden and let empty. Adding super.updateRenderBitmap() here fixed this issue... ...but now if I set autoUpdate to false, update() doesn't update the bitmap anymore (if I change alpha). Argh. So finally I'm using a BitmapMaterial and manually update the bitmap, but it was a rather unpleasant experience. Away3D is a nice engine but there are a lot of weird and frustrating things like that...
