Ok, have done that. Now getting this error:
DragDrop.as, Line 10 1084: Syntax error: expecting identifier before this.

Line 10: var thisisplayObject;

And also these errors:

Map.as, Line 1 5000: The class 'Map' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.
DragDrop.as, Line 1 5000: The class 'DragDrop' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.
DragDrop.as, Line 1 5000: The class 'DragDrop' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.
DragDrop.as, Line 1 5000: The class 'DragDrop' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.
DragDrop.as, Line 1 5000: The class 'DragDrop' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.

Nothing is dragable either!

Thanks.