MockResponse Step NullPointer exception

If a mock response step has a startStep defined and the mock response step is disabled a null pointer exception occurs.

This applies equally to release 4.0.1 and 4.5b2

In the case of 4.5b2 the test case aborts immediately.

In the case of 4.0.1 the test case continues but receives a number of messages regarding soapAction not being defined. I would love to give you a copy of the log, but soapui crashed on me.