I just noticed something that may be a problem in the actual code.

In TweensyPluginList.checkOut you can read :

var i : int; var len : int = list.length - 1; var Type : Class;

for(i = 0;i < len; i++) { Type = list[i]; if(item is Type) return pool.checkOut(map[Type]); }

return pool.checkOut(map[list[len]]);

The for loop would be skipping the last item. Am I just tired or is this a problem?

This is in the cs3 original release, cs4 original too. Didint check others

TweensyPluginList.as Line 63

It's to reduce length loops the last item is the last fallback so this isn't an issue i.e. return pool.checkOut(map[list[len]]);