NullPointerException updating interface

Hi all!

I am trying to use SoapUI to test a WSDL file I have developed, but when I update the interface I have this error stack:

Wed Oct 13 17:40:23 CEST 2010:ERROR:java.lang.NullPointerException java.lang.NullPointerException at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlUtils.getExentsibilityElements(WsdlUtils.java:140) at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlUtils.getAnonymous(WsdlUtils.java:1136) at com.eviware.soapui.impl.wsdl.WsdlInterface.transferOperations(WsdlInterface.java:467) at com.eviware.soapui.impl.wsdl.WsdlInterface.updateDefinition(WsdlInterface.java:307) at com.eviware.soapui.impl.wsdl.actions.iface.UpdateInterfaceAction.perform(UpdateInterfaceAction.java:125) at com.eviware.soapui.impl.wsdl.actions.iface.UpdateInterfaceAction.perform(UpdateInterfaceAction.java:52) at com.eviware.soapui.support.action.swing.SwingActionDelegate.actionPerformed(SwingActionDelegate.java:104) at com.eviware.soapui.support.action.swing.DefaultActionList.dispatchKeyEvent(DefaultActionList.java:134) at com.eviware.soapui.ui.Navigator$TreeKeyListener.keyPressed(Navigator.java:236) at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:233) at java.awt.Component.processKeyEvent(Component.java:6306) at javax.swing.JComponent.processKeyEvent(JComponent.java:2801) at java.awt.Component.processEvent(Component.java:6125) at java.awt.Container.processEvent(Container.java:2085) at java.awt.Component.dispatchEventImpl(Component.java:4714) at java.awt.Container.dispatchEventImpl(Container.java:2143) at java.awt.Component.dispatchEvent(Component.java:4544) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1850) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:712) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676) at java.awt.Component.dispatchEventImpl(Component.java:4586) at java.awt.Container.dispatchEventImpl(Container.java:2143) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4544) at java.awt.EventQueue.dispatchEvent(EventQueue.java:635) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

I guess it is a matter of error on my WSDL file, but I do not know how to solve it nor how to find it, any thought?

Thanks in advance,

VictorR.