I am trying publish a Flash MX file as Flash 5.

I get the complaint....

WARNING: This movie uses features that are not supported in the Flash 5 player
Scene=Scene 1, Layer=speedo, Frame=35: Flash MX Button Instance Name

......all I have done is make a draggable button with an instance name whose co-ordinates are controlled by action scripts.

Anyone have a clue as to what I may have done by accident that only works for MX?