What does an ActionScript called "antiAliasType" mean in the following context?

Question

// When I Run The Following Two Lines, I Get The Error Shown Below var B:Button=new Button(); var lineMetrics:TextLineMetrics=B.measureText('Hello World'); // TypeError: Error #2007: Parameter antiAliasType must be non-null. 

From my point of view, as worthless mistakes go, this is inalienable.

Can someone point me in the right direction?

Answer 1

The last post in this thread can help: http://www.actionscript.org/forums/showthread.php3?t=148610