SoapUI Pro crashed when tried to apply trial license

I have installed soapui pro 5.1.1 from soapui.org. I received 14days trial license over mail. When I browsed the trial license and clicked on OK, soapUI crashed without any error message. This happens everytime is tried to apply the trial license.

Kinldy help me with this issue, as I am loosing my trial period to try this tool.