I don't actually know what is causing this in your case.
The forms collection should only have forms in it but for some reason your loop is finding a form which does not exist.
Are you running this code from the load or destroy event of a form? maybe the form has not initialised but is in the _screen.forms collection.

Is Hugs your name or are you just very friendly :)

>Will, can I treat the mistake with that example that you passed me, but because the times he doesn't come back me the form as an object and the times it comes back, is it that what I am not getting to find, does it exist some detail so that that happens?
>
>Thank you.
>Hugs []