Allow invalid SSL certificates

Hi, I was wondering whether anything can be done to allow invalid SSL certificates? We want to purchase and make use of the pro versions of SoapUI and LoadUI, but with every new version of the free software that we try we don't get any further than the front page of our application under test. Our applications usually reside in a test environment with invalid certificates, and we have no way of making them valid.

There are other posts regarding invalid certificates, unfortunately most do not have replies which suggests the problem has not been solved.