AdamAtomic/flixel — Issue #217: FlxG.as line 738,743 undefined property bitmapData 
Author: kreso22
Created: 2011-12-28 06:00:57+00:00
State: open

My editor caught it (Access of undefined property bitmapData)

_cache[Key] = (new Graphic).bitmapData;
if(Reverse)
needReverse = true;
}
var pixels:BitmapData = _cache[Key];
if(!needReverse && Reverse && (pixels.width == (new Graphic).bitmapData.width))