removeChild error 2007

[OhAlexO]

First off I'd like to say I did a search on this and although there are many subjects on the matter, none really apply to mine.

My problem is this: There is an enemy on the stage(enemyTwo) in which I remove if its health meter gets below a certain point. You lower the enemy's health by hitting it with little daggers that you throw.

Everything works fine up to a point, the health bar slowly goes down and the enemy even seems to disappear when the removeChild/enemyTwo = null directives are called, however, there seems to be a small window of time where the daggers will hit an invisible version of the enemy which in turn gives me the "Error #2007: Parameter hitTestObject must be non-null" error which in turn causes other things to go awry or Id just ignore it =).

public function checkCollisionWithEnemies(bullet:MovieClip)
        {
            
            if(enemyTwo != null)
            {
                if(enemyTwo.hitTestObject(bullet))
                {
                    enemyTwo.subObject.meter.width -= 10;
                    removeChild(bullet);
                    
                    
                    if(enemyTwo.subObject.meter.width < 3)
                    {
                        
                        enemyTwo.stop();
                        removeChild(enemyTwo);
                        enemyTwo = null;
                        
                    }
                }
                
                
            }
         }

private function onEnter(evt:Event):void
        {
            
            y -= 10;
            rotation += 20;
            
            MovieClip(parent).checkCollisionWithEnemies(this);
            
            
        }

Any insight would be appreciated.

[ASWC]

Apparently you can write if statements to check things ... Why don't write one to check if you should remove something?

if(enemyTwo.parent)
{
    removeChild(enemyTwo);
}

[OhAlexO]

It figures I would find out the solution to my problem shortly after clicking submit(spent the last two days with this bugging the crap out of me).

Anyway, I put an extra if(enemyTwo != null) in front of a hittest between my player and the enemy, it worked. Flash pointed me to one point in the code so I forgot that I should check all references to each variable, and not work in tunnel vision mode.

TL:DR - For anyone with a similar problem, check all references to the variable in question, not just where the program says the problem is.

P.S. I appreciate the attempt to help in the form of an insult, it really encourages me to be more active in the forums. There is a reason I never ask for help on any forum.