First of all, the SoapUI Runner creates 2 log files you can have a look at:
~/.loadui/logs/soapui.log
~/.loadui/logs/soapui-errors.log
Secondly, you might be able to see some errors by attaching a TableLog component (the last one on the left-hand panel) to the output of your components.
Finally, you might want to turn off the SoapUI Runners once you log out, otherwise they will keep running (ie. trying to run your transactions) after logging out! To do this, just plug a Scheduler component to the left-input of you runner and maybe limit your test by time so it will stop after that.
Renato