Originally Posted by Tink
the mx package is for Flex. by default you will not be able to use it in AS projects or Flash projects. the mx package is what makes flex flex and not just flash.
Cheers for the clarification Tink.
Bless Adobe - that's not confusing at all is it!
So if you're using AVM1 in Flash 9 I guess you'll still need to import mx.controls.* but if you're using AVM2 in Flash 9 it will be something like flash.controls.*
ps Out of curiosity, do you know if this changed at any point during the alpha/beta? It looks as if Aral was using it in an Actionscript project not a Flex project. All his Flex2 course examples have a .flexProperties file, and all the AS3 course examples don't - including this one.