Application ID initialization fails J2ME

[kahonmlg]

Hi there!,
I'm trying to do (simulator Nokia SDK 2.0 with In-app purchase simulation "Test with Nokia Publish Server"):

public static IAPClientPaymentManager getIAPManager() {
        if (manager == null) {
            try {
                manager = IAPClientPaymentManager.getIAPClientPaymentManager();
            }
            catch (IAPClientPaymentException ipe) {
                Log.p(ipe.getMessage());
            }
        }
        return manager;
    }

But I got :

"Application ID initialization fails"

Does anybody know why this happen?

Thank you a lot!
Best,
Fernando Moreno.