I ran the following commands from a batch file resulting in the error noted further below: set XFIRE_HOME=C:\development\tools\xfire-1.2.2 rem set the classes setlocal EnableDelayedExpansion rem loop through the libs and add them to the class path set XFIRE_CLASS_PATH=%XFIRE_HOME% FOR %%c in ("%XFIRE_HOME%\lib*.jar") DO set XFIRE_CLASS_PATH=Unable to render embedded object: File (XFIRE_CLASS_PATH) not found.;%%c set ANT_CLASS_PATH=C:\development\tools\apache-ant-1.6.5\lib\ant.jar set CDS_CLASS_PATH=C:\development\src\libs\SyncCustomerPartyMaster.jar java -cp %XFIRE_HOME%\xfire-all-1.2.2.jar;%XFIRE_CLASS_PATH%;%CDS_CLASS_PATH%;%ANT_CLASS_PATH% org.codehaus.xfire.gen.WsGen -wsdl "foo\syncCustomerPartyMaster.wsdl" -o . -overwrite true XFire WsGen Error: java.lang.NullPointerException at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.isWrapped(WSDLServiceBuilder.java:539) at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.visit(WSDLServiceBuilder.java:377) at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.build(WSDLServiceBuilder.java:187) at org.codehaus.xfire.gen.Wsdl11Generator.generate(Wsdl11Generator.java:102) at org.codehaus.xfire.gen.WsGen.main(WsGen.java:122) Exception in thread "main" java.lang.NullPointerException at org.codehaus.xfire.gen.WsGen.main(WsGen.java:126) Caused by: java.lang.NullPointerException at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.isWrapped(WSDLServiceBuilder.java:539) at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.visit(WSDLServiceBuilder.java:377) at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.build(WSDLServiceBuilder.java:187) at org.codehaus.xfire.gen.Wsdl11Generator.generate(Wsdl11Generator.java:102) at org.codehaus.xfire.gen.WsGen.main(WsGen.java:122) — Nested Exception — java.lang.NullPointerException at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.isWrapped(WSDLServiceBuilder.java:539) at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.visit(WSDLServiceBuilder.java:377) at org.codehaus.xfire.wsdl11.parser.WSDLServiceBuilder.build(WSDLServiceBuilder.java:187) at org.codehaus.xfire.gen.Wsdl11Generator.generate(Wsdl11Generator.java:102) at org.codehaus.xfire.gen.WsGen.main(WsGen.java:122) I've added an attachement that contains the schemas and the wsdl that uses them so that you can reproduce the error.