ActionScript 3.0 :: Error 1120 In My "terminal" Application?

I have tried to make a kind of terminal application that does the following things (in the corresponding order):

1. Dynamically makes two text boxes on the stage (output and input)

2. Types the welcome message to the user in a typewriter-like effect

3. A text field for input then moves to the end of the text field for output

4. A cursor starts to blink in the input text field

I get 2 errors of the same code: 1120. It is because of my blinkRect function. (It adds and removes the rectangle from the stage, creating a cursor effect.) It uses the commands addChild(blink) and removeChild(blink) after the rectangle has been added to the stage. But, from the looks of the flash error, it seems as if the ActionScript engine parses this code before making the rectangle. I don't understand this, as I have not programmed it this way.Here's my code (and there's nothing on the stage, so just pasting it into a frame should exactly replicate my problem):

Code:
// IMPORT CLASSES
import fl.transitions.Tween;
import fl.transitions.easing.*;[code]...