SoapUI 5.1.3 - java.net.ssl.SSLException

I upgraded my soapui from 5.0.0 to 5.1.3. today. I get the error Javax.net.ssl.SSLException when I run my test in 5.1.3 but when I run the same in 5.0.0 I don't get the error. I am using Mac and belo...