WSDL2 java code generation fails when using a wsdl2 file

Following error occurs when generating code using ?wsdl2 file using wsdl2java.bat file.

A problem was encountered while creating the build in XML schema types: java.lang.RuntimeException:java.lang.NullPointerException
INFO [2007-07-06 17:20:19,281] The .\src\org\test\MultiplyNumbersSOAP11EndpointCallbackHandler.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,296] The .\src\org\test\MultiplyNumbersSOAP11EndpointStub.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,296] The .\src\org\test\MultiplyNumbersSecureSOAP11EndpointCallbackHandler.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,312] The .\src\org\test\MultiplyNumbersSecureSOAP11EndpointStub.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,312] The .\src\org\test\MultiplyNumbersSecureHTTPEndpointCallbackHandler.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,312] The .\src\org\test\MultiplyNumbersSecureHTTPEndpointStub.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,328] The .\src\org\test\MultiplyNumbersHTTPEndpointCallbackHandler.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,328] The .\src\org\test\MultiplyNumbersHTTPEndpointStub.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,343] The .\src\org\test\MultiplyNumbersSOAP12EndpointCallbackHandler.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,343] The .\src\org\test\MultiplyNumbersSOAP12EndpointStub.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,343] The .\src\org\test\MultiplyNumbersSecureSOAP12EndpointCallbackHandler.java file cannot be overwritten.
INFO [2007-07-06 17:20:19,343] The .\src\org\test\MultiplyNumbersSecureSOAP12EndpointStub.java fil
e cannot be overwritten.
WARN [2007-07-06 17:20:20,140] Exception occurred while trying to pretty print file .\conf\rampart
\scenario10-policy.xml
java.lang.Exception: File renaming failed!C:\wsas\new-builds\wso2wsas-SNAPSHOT\.\conf\rampart\scenario10-policy.xml
at org.apache.axis2.util.XMLPrettyPrinter.prettify(XMLPrettyPrinter.java:86)
at org.apache.axis2.wsdl.codegen.extension.XMLPrettyPrinterExtension.prettifyFile(XMLPrettyPrinterExtension.java:38)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:48)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.engage(AbstractPrettyPrinterExtension.java:34)
at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGenerationEngine.java:259)
at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:35)
at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:24)
WARN [2007-07-06 17:20:20,203] Exception occurred while trying to pretty print file .\conf\rampart\scenario4-policy.xml
java.lang.Exception: File renaming failed!C:\wsas\new-builds\wso2wsas-SNAPSHOT\.\conf\rampart\scenario4-policy.xml
at org.apache.axis2.util.XMLPrettyPrinter.prettify(XMLPrettyPrinter.java:86)
at org.apache.axis2.wsdl.codegen.extension.XMLPrettyPrinterExtension.prettifyFile(XMLPrettyPrinterExtension.java:38)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:48)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractPrettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.engage(AbstractPrettyPrinterExtension.java:34)
at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGenerationEngine.java:259)
at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:35)
at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:24)
java.lang.Exception: File renaming failed!C:\wsas\new-builds\wso2wsas-SNAPSHOT\.\conf\server.xml
at org.apache.axis2.util.XMLPrettyPrinter.prettify(XMLPrettyPrinter.java:86)
at org.apache.axis2.wsdl.codegen.extension.XMLPrettyPrinterExtension.prettifyFile(XMLPrettyP
rinterExtension.java:38)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractP
rettyPrinterExtension.java:48)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractP
rettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.prettify(AbstractP
rettyPrinterExtension.java:52)
at org.apache.axis2.wsdl.codegen.extension.AbstractPrettyPrinterExtension.engage(AbstractPre
ttyPrinterExtension.java:34)
at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGenerationEngine.java:259
)
at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:35)
at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:24)
SystemId Unknown; Line #-1; Column #-1; Premature end of file.

Steps to reproduce:
================
1. Deploy a service and get its ?wsdl2 version
2. Generate client code using wsdl2java as follows.
wsdl2java.bat -uri http://10.100.1.118:9762/services/multiplyNumbers?wsdl2 -wv 2.0 -o .