NullPointerException from logger when generating mock war file

Just to show that this happens from both UI and command line:

java.lang.NullPointerException

                at com.eviware.soapui.SoapUI.logError(SoapUI.java:950)

                at com.eviware.soapui.SoapUI.logError(SoapUI.java:946)

                at com.eviware.soapui.support.UISupport.showErrorMessage(UISupport.java:739)

                at com.eviware.soapui.tools.MockAsWar.createMockAsWarArchive(MockAsWar.java:122)

                at com.smartbear.servicev.action.project.VirtAsWarAction.perform(VirtAsWarAction.java:102)

                at com.smartbear.servicev.action.project.VirtAsWarAction.perform(VirtAsWarAction.java:1)

                at com.eviware.soapui.support.action.swing.SwingActionDelegate.actionPerformed(SwingActionDelegate.java:130)

java.lang.NullPointerException

        at com.eviware.soapui.SoapUI.logError(SoapUI.java:950)

        at com.eviware.soapui.SoapUI.logError(SoapUI.java:946)

        at com.eviware.soapui.support.UISupport.showErrorMessage(UISupport.java:739)

        at com.eviware.soapui.tools.MockAsWar.createMockAsWarArchive(MockAsWar.java:122)

        at com.smartbear.ready.cmd.runner.pro.SoapUIProMockAsWarGenerator.runRunner(SoapUIProMockAsWarGenerator.java:79)

        at com.smartbear.ready.cmd.runner.AbstractSoapUIRunner.run(AbstractSoapUIRunner.java:257)

        at com.smartbear.ready.cmd.runner.AbstractSoapUIRunner.runFromCommandLine(AbstractSoapUIRunner.java:160)

        at com.smartbear.ready.cmd.runner.pro.SoapUIProMockAsWarGenerator.main(SoapUIProMockAsWarGenerator.java:29)