URGENT ! java.lang.NullPointerException after upgrading to 4.8.0

Hi,
Trying to load calendar item and getting an exception:

Appointment app = Appointment.load(...);

MailMessage msg = new MailMessage();

msg.addAlternateView(app.requestApointment());

MapiMessage mapi = MapiMessage.fromMailMessage(msg, this.options);

java.lang.NullPointerException
at com.aspose.email.MapiMessage.fromMailMessage(Unknown Source)

Hi,

Please provide us with your sample calendar item that we can use for investigating this issue at our end and assisting you further.