Malformed UTF character: 0xe2 0x80 0x3f

I've the same problem

Wed Aug 08 14:04:00 PDT 2012:ERROR:com.eviware.soapui.support.SoapUIException: Failed to load project from file [file:/C:/SoapUI/Projects/EcommWebServices/EcommWebServices-SoapUIPro-Project.xml]
com.eviware.soapui.support.SoapUIException: Failed to load project from file [file:/C:/SoapUI/Projects/EcommWebServices/EcommWebServices-SoapUIPro-Project.xml]
at com.eviware.soapui.impl.wsdl.WsdlProjectPro.loadProject(SourceFile:314)
at com.eviware.soapui.impl.wsdl.WsdlProject.<init>(WsdlProject.java:244)
at com.eviware.soapui.impl.wsdl.WsdlProjectPro.<init>(SourceFile:180)
at com.eviware.soapui.impl.wsdl.WsdlProjectProFactory.createNew(SourceFile:53)
at com.eviware.soapui.impl.wsdl.WsdlProjectProFactory.createNew(SourceFile:16)
at com.eviware.soapui.impl.WorkspaceImpl.reloadProject(WorkspaceImpl.java:539)
at com.eviware.soapui.impl.WorkspaceImpl.openProject(WorkspaceImpl.java:665)
at com.eviware.soapui.impl.wsdl.actions.project.OpenProjectAction.perform(OpenProjectAction.java:39)
at com.eviware.soapui.impl.wsdl.actions.project.OpenProjectAction.perform(OpenProjectAction.java:26)
at com.eviware.soapui.support.action.swing.SwingActionDelegate.actionPerformed(SwingActionDelegate.java:89)
at com.eviware.soapui.support.action.swing.DefaultActionList.performDefaultAction(DefaultActionList.java:107)
at com.eviware.soapui.ui.Navigator$TreeMouseListener$1.run(Navigator.java:408)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.io.CharConversionException: Malformed UTF-8 character: 0xe2 0x80 0x3f
at org.apache.xmlbeans.impl.piccolo.xml.UTF8XMLDecoder.decode(UTF8XMLDecoder.java:108)
at org.apache.xmlbeans.impl.piccolo.xml.XMLStreamReader$FastStreamDecoder.read(XMLStreamReader.java:762)
at org.apache.xmlbeans.impl.piccolo.xml.XMLStreamReader.read(XMLStreamReader.java:162)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.yy_refill(PiccoloLexer.java:3474)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.yylex(PiccoloLexer.java:3958)
at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yylex(Piccolo.java:1290)
at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yyparse(Piccolo.java:1400)
at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.parse(Piccolo.java:714)
at org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3454)
at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1276)
at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1263)
at org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:345)
at com.eviware.soapui.config.SoapuiProjectDocumentConfig$Factory.parse(Unknown Source)
at com.eviware.soapui.impl.wsdl.WsdlProjectPro.loadProject(SourceFile:193)
... 25 more