The filling! It was runny, therefore it wasn't a pie, LOL.

>
> Where did you run into problems? Was it the filling or the meringue?
> It's the same basic method from scratch as it is with a package. The
> package just gives you the cornstarch and sugar along with the artificial
> flavouring and colouring. Heat it up and stir constantly until it
> thickens. Let it cool off before putting it in the pre cooked pie
> shell. Whip up the egg whites with a bit of Cream of Tartar and add the
> sugar and beat into stiff peaks. I usually find two egg whites not to be
> enough so I use a third one. Slather the meringue on top of the pie and
> bake it until the meringue starts to brown nicely. IMO, it is one of the
> easiest pies to make.