So, somewhere a null object is trying to be referenced.

You will need to add debugging code to check which object is null.

If you need two way communication between your windows I would recommend 
creating an interface and implementing it in both windows.

--- In flexcoders@yahoogroups.com, "isa_loyer" <isa_loyer@...> wrote:
>
> I am working on an AIR application with 2 windows: One to create a new 
> customer and another to display some information about the customer. On 
> window 1, there is also a textfield to search for a customer by Id or name.
> 
> These are the steps to create a new customer:
> 
> with an "add" button on window 1, I open window 2.
> on window 2, the user completes a form to create a new customer.
> the information is saved in a MySQL Database over an HttpService.
> The result handler method calls a public function on window 1:
> 
> result = "new wWin1().resultSaveCustomer(event)"
> This part works well - the new customer Id is received.
> 
> In some cases, according customer data, I change the component color - this 
> operation works well, if I load a customer after a using the search field, 
> but if I search directly from the resultSaveCustomer function (after 
> completion of step 3), a message appears:
> 
> Cannot access a property or method of a null object reference.
> 
> I don't understand why, because all the components in window 1, have an Id 
> name! Or the property is a label with Id Name.
> 
> Thanks for helping me.
>


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