>
>
> Before you try this code I would urge you to check the setup of your
> application as it (usually) should be avoidable to have this error in the
> first place.
>
>
> Greetz Erik



Thanks for your comments Erik, my set up is as follows ScriptHolder <-
scroll component inside scriptHolder....

The script holder has an event to detect the mouse position, if the mouse
position is out of the area where the scroll component is located at then
the scroll component is "destroyed"... everything works fine but say you
press the down or up arrow key, then you hold the mouse down and roll off
the component the "destroy" method then is fired because you are located
away from the component and that is how the error fires...

You are right in regards to having to check my setup specially since it was
one of those "we need it done now, no matter what has to be done" times.

Thanks again,
Helmut

On 1/29/08, Helmut Granda <[EMAIL PROTECTED]> wrote:
> >
> > I have a scroll component that sometimes is deleted from the display
> list
> > while the user is holding the scroll bar and I get this error:
> >
> > TypeError: Error #1009: Cannot access a property or method of a null
> > object
> > reference.
> >     at fl.controls::ScrollBar/fl.controls:ScrollBar::thumbReleaseHandler
> ()
> >
> > We know this error is fired since the scroll component is non-existent
> by
> > the time the user releases the scroll bar...I am trying to catch it but
> > not
> > sure how should I catch this type of error since this is fired from
> within
> > the component...
> >
> > I have tried the following:
> >
> > sp.addEventListener(MouseEvent.MOUSE_UP, catchError);
> > sp.addEventListener(MouseEvent.MOUSE_LEAVE, catchError);
> >
> > and so forth... I am still trying but some suggestions would be great.
> >
> > Thanks,
> > Helmut
> > _
> >
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-- 
...helmut
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