I using as3 runtime , I loaded file without 'mesh' and 'IK' is normal
but if you load file with 'mesh' and 'IK', only part of display..
such as 'spineboy-hoverboard', no head
sorry,my english is poor..can you understand?
I already know why can't display ....
but you can use stage3D , Context3D - public function drawToBitmapData(destination:BitmapData):void
can you try it and print FPS ?