Getting a widget to display the whole transcript output

> Hello,
>
> I have a GTK+ widget which has a text view in it. I want to redirect all
> Transcript output to this widget. I implemented #nextPutAll: for this widget
> and did:
>
> Transcript message: myWidget ->  #nextPutAll:.
>
> But whenever an error happens, it still displays the first few words of the
> error on the console and the rest of the error on the widget. For example
> when I evaluate:
>
>   6 blabla
>
> the console displays:
>
>   Object: 6
>
> and the rest of the error is displayed on my widget's text view:
>
>
>    error: did not understand #blabla
>   MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254)
>   SmallInteger(Object)>>doesNotUnderstand: #blabla (SysExcept.st:1407)
>   optimized [] in UndefinedObject>>Doit (a String:2)
>   UndefinedObject>>Doit (a String:1)
>   [] in Behavior class(Behavior)>>evalString:to: (Behavior.st:428)
>
>
> Anyone has an idea what the problem might be? I might try to create a sample
> code if you have no idea...