Updating definition gives: unsupported protocol: 'store'

I am getting this exception, 1.5.1,  when importing a new SoapUI project or updating an existing project. What does it mean ?

2009-02-19 10:15:48,640 ERROR [errorlog] java.lang.IllegalStateException: unsupported protocol: 'store'
java.lang.IllegalStateException: unsupported protocol: 'store'
at org.apache.commons.httpclient.protocol.Protocol.lazyRegisterProtocol(Protocol.java:149)
at org.apache.commons.httpclient.protocol.Protocol.getProtocol(Protocol.java:117)
at org.apache.commons.httpclient.HttpHost.(HttpHost.java:107)
at org.apache.commons.httpclient.HttpMethodBase.setURI(HttpMethodBase.java:280)
at org.apache.commons.httpclient.HttpMethodBase.(HttpMethodBase.java:220)
at org.apache.commons.httpclient.methods.GetMethod.(GetMethod.java:89)
at com.eviware.soapui.impl.wsdl.support.wsdl.UrlWsdlLoader.createGetMethod(UrlWsdlLoader.java:182)
at com.eviware.soapui.impl.wsdl.support.wsdl.UrlWsdlLoader.load(UrlWsdlLoader.java:115)
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlLoader.loadXmlObject(WsdlLoader.java:108)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:470)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.selectDefinitionParts(SchemaUtils.java:494)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:476)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.selectDefinitionParts(SchemaUtils.java:494)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:476)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:460)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionCache.update(AbstractDefinitionCache.java:94)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext$Loader.construct(AbstractDefinitionContext.java:219)
at com.eviware.soapui.support.swing.SwingWorkerDelegator.construct(SwingWorkerDelegator.java:45)
at com.eviware.soapui.support.swing.SwingWorker$2.run(SwingWorker.java:111)
at java.lang.Thread.run(Thread.java:619)
2009-02-19 10:16:08,718 ERROR [errorlog] java.lang.Exception: java.lang.IllegalStateException: unsupported protocol: 'store'
java.lang.Exception: java.lang.IllegalStateException: unsupported protocol: 'store'
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext.load(AbstractDefinitionContext.java:154)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext.load(AbstractDefinitionContext.java:113)
at com.eviware.soapui.impl.wsdl.WsdlInterface.updateDefinition(WsdlInterface.java:273)
at com.eviware.soapui.impl.wsdl.actions.iface.UpdateInterfaceAction.perform(UpdateInterfaceAction.java:121)
at com.eviware.soapui.impl.wsdl.actions.iface.UpdateInterfaceAction.perform(UpdateInterfaceAction.java:52)
at com.eviware.soapui.support.action.swing.SwingActionDelegate.actionPerformed(SwingActionDelegate.java:100)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
at java.awt.Component.processMouseEvent(Component.java:6216)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
at java.awt.Component.processEvent(Component.java:5981)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4583)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4413)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2475)
at java.awt.Component.dispatchEvent(Component.java:4413)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.lang.IllegalStateException: unsupported protocol: 'store'
at org.apache.commons.httpclient.protocol.Protocol.lazyRegisterProtocol(Protocol.java:149)
at org.apache.commons.httpclient.protocol.Protocol.getProtocol(Protocol.java:117)
at org.apache.commons.httpclient.HttpHost.(HttpHost.java:107)
at org.apache.commons.httpclient.HttpMethodBase.setURI(HttpMethodBase.java:280)
at org.apache.commons.httpclient.HttpMethodBase.(HttpMethodBase.java:220)
at org.apache.commons.httpclient.methods.GetMethod.(GetMethod.java:89)
at com.eviware.soapui.impl.wsdl.support.wsdl.UrlWsdlLoader.createGetMethod(UrlWsdlLoader.java:182)
at com.eviware.soapui.impl.wsdl.support.wsdl.UrlWsdlLoader.load(UrlWsdlLoader.java:115)
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlLoader.loadXmlObject(WsdlLoader.java:108)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:470)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.selectDefinitionParts(SchemaUtils.java:494)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:476)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.selectDefinitionParts(SchemaUtils.java:494)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:476)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:460)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionCache.update(AbstractDefinitionCache.java:94)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext$Loader.construct(AbstractDefinitionContext.java:219)
at com.eviware.soapui.support.swing.SwingWorkerDelegator.construct(SwingWorkerDelegator.java:45)
at com.eviware.soapui.support.swing.SwingWorker$2.run(SwingWorker.java:111)
at java.lang.Thread.run(Thread.java:619)