TypeError: Error #1006 - Removing MovieClip from the stage

I have a movie clip that is called to the stage and once the movieclip is finished it calls a function that removes it from the stage. The code works but I get an error message about 4 seconds after the movie clip ends.

Here’s the error message:

TypeError: Error #1006: exitWordMicroscopic is not a function.

                at ASvocabulary_microscopic/frame110()[ASvocabulary_microscopic::frame110:1]

Here’s the stage code:

//************************Removes the movieclip from the stage and enables the button.*************************

function exitWordMicroscopic():void

{

                bnt_vocab_microscopic.mouseEnabled = true;

                removeChild(word_Microscopic);

}

//******************************Stage buttons**************************************

stage.addEventListener(MouseEvent.MOUSE_DOWN, goButtonsHomeRead_1);

function goButtonsHomeRead_1(event:MouseEvent):void

{

                //Vocabulary buttons

                if (event.target == bnt_vocab_microscopic)

                {

                                bnt_vocab_microscopic.mouseEnabled = false;

                                SoundMixer.stopAll();

                                addChild(word_Microscopic);

                                word_Microscopic.x = 47;

                                word_Microscopic.y = 120;

                }

}

Here’s the code inside the movie clip. This is what the error message is referring to:

//****************** Calls function to remove itself from the stage****************************

Object(parent).exitWordMicroscopic();

What am I doing wrong?