[ASC] error message when fully qualified name for type contains colon (:)

Steps to reproduce:
1. Compile attached mxml using mxmlc

Actual Results:

main.mxml(-1): Error: Type was not found or was not a compile-time constant: Vector.

<?xml version="1.0" encoding="iso-8859-1"?>

Expected Results:
I think it should complain for the invalid type object (mx.components:FxButton)