While upgrading my Desktop Widget I received the fatal error message

Hi guys,
While upgrading my Desktop Widget I received the fatal error message as under. I do not understand the message. But I am anxious about the message. What does it mean? If you have any idea for the error message please help me.
Thanks in advance.

Met Office Desktop Widget
Sorry, an error has occurred.
An error occurred while updating the application. Try updating it again.
If the problem persists, contact the application author.
