WSDL 2 JAVA compilation error

~/jboss/bin/wsconsume.sh -k https://api.shapeways.com/v1/wsdl.php
Could not find log4j.xml configuration, logging to console.

Loading FrontEnd jaxws ...
Loading DataBinding jaxb ...
wsdl2java -compile -exsh false -d /home/dasher/Sunglass/temp/output -verbose -classdir /home/dasher/Sunglass/temp/output -allowElementReferences https://api.shapeways.com/v1/wsdl.php
wsdl2java - Apache CXF 2.4.1

Failed to invoke WSDLToJava
org.apache.cxf.tools.common.ToolException: org.apache.cxf.wsdl11.WSDLRuntimeException: Fail to create wsdl definition from : https://api.shapeways.com/v1/wsdl.php
Caused by : WSDLException (at /definitions/message[1]/part[2]): faultCode=INVALID_WSDL: Encountered illegal extension attribute 'nillable'. Extension attributes must be in a namespace other than WSDL's. 
	at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:291)
	at org.apache.cxf.tools.common.toolspec.ToolRunner.runTool(ToolRunner.java:103)
	at org.apache.cxf.tools.wsdlto.WSDLToJava.run(WSDLToJava.java:113)
	at org.jboss.wsf.stack.cxf.tools.CXFConsumerImpl.consume(CXFConsumerImpl.java:250)
	at org.jboss.ws.tools.cmd.WSConsume.importServices(WSConsume.java:279)
	at org.jboss.ws.tools.cmd.WSConsume.mainInternal(WSConsume.java:104)
	at org.jboss.ws.tools.cmd.WSConsume.main(WSConsume.java:92)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.jboss.modules.Module.run(Module.java:270)
	at org.jboss.modules.Main.main(Main.java:313)
Caused by: org.apache.cxf.wsdl11.WSDLRuntimeException: Fail to create wsdl definition from : https://api.shapeways.com/v1/wsdl.php
Caused by : WSDLException (at /definitions/message[1]/part[2]): faultCode=INVALID_WSDL: Encountered illegal extension attribute 'nillable'. Extension attributes must be in a namespace other than WSDL's. 
	at org.apache.cxf.wsdl11.WSDLDefinitionBuilder.parseWSDL(WSDLDefinitionBuilder.java:97)
	at org.apache.cxf.wsdl11.WSDLDefinitionBuilder.build(WSDLDefinitionBuilder.java:69)
	at org.apache.cxf.tools.wsdlto.frontend.jaxws.wsdl11.JAXWSDefinitionBuilder.build(JAXWSDefinitionBuilder.java:84)
	at org.apache.cxf.tools.wsdlto.frontend.jaxws.wsdl11.JAXWSDefinitionBuilder.build(JAXWSDefinitionBuilder.java:61)
	at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.processWsdl(WSDLToJavaContainer.java:171)
	at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:138)
	at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:283)
	... 12 more
Caused by: javax.wsdl.WSDLException: WSDLException (at /definitions/message[1]/part[2]): faultCode=INVALID_WSDL: Encountered illegal extension attribute 'nillable'. Extension attributes must be in a namespace other than WSDL's.
	at com.ibm.wsdl.xml.WSDLReaderImpl.parseExtensibilityAttributes(Unknown Source)
	at com.ibm.wsdl.xml.WSDLReaderImpl.parsePart(Unknown Source)
	at com.ibm.wsdl.xml.WSDLReaderImpl.parseMessage(Unknown Source)
	at com.ibm.wsdl.xml.WSDLReaderImpl.parseDefinitions(Unknown Source)
	at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
	at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
	at org.apache.cxf.wsdl11.WSDLManagerImpl.loadDefinition(WSDLManagerImpl.java:237)
	at org.apache.cxf.wsdl11.WSDLManagerImpl.getDefinition(WSDLManagerImpl.java:186)
	at org.apache.cxf.wsdl11.WSDLDefinitionBuilder.parseWSDL(WSDLDefinitionBuilder.java:78)
	... 18 more