[Gusdev-gusdev] wdk model

[<fed...@bi...>]

Hi! It's Federica here, I wrote you in the past!
I'm fighting with the wdk model (WDK 1.2)! When I run this command:
wdkXml -model toyModel

it gives me this java class error:
.Exception in thread "main" java.lang.NoSuchMethodError:
org.apache.xerces.parser
s.XML11Configuration.addCommonComponent(Lorg/apache/xerces/xni/parser/XMLCompone
nt;)V
        at
org.apache.xerces.parsers.XIncludeParserConfiguration.<init>(Unknown
Source)
        at
org.apache.xerces.parsers.XIncludeParserConfiguration.<init>(Unknown
Source)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:39)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
onstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
        at java.lang.Class.newInstance0(Class.java:308)
        at java.lang.Class.newInstance(Class.java:261)
        at
org.apache.xerces.util.ObjectFactory.newInstance(ObjectFactory.java:3
                                          07)
        at
org.apache.xerces.util.ObjectFactory.createObject(ObjectFactory.java:
                                          177)
        at
org.apache.xerces.util.ObjectFactory.createObject(ObjectFactory.java:
                                          137)
        at org.apache.xerces.parsers.SAXParser.<init>(SAXParser.java:140)
        at org.apache.xerces.parsers.SAXParser.<init>(SAXParser.java:125)
        at
org.apache.xerces.jaxp.SAXParserImpl.<init>(SAXParserImpl.java:102)
        at
org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(SAXParserFac
                                          toryImpl.java:95)
        at
com.thaiopensource.xml.sax.Jaxp11XMLReaderCreator.createXMLReader(Unk
                                          nown Source)
        at
com.thaiopensource.validate.auto.AutoSchemaReader.createSchema(Unknow
                                          n Source)
        at com.thaiopensource.validate.ValidationDriver.loadSchema(Unknown
Sourc                                           e)
        at
org.gusdb.wdk.model.implementation.ModelXmlParser.validModelFile(Mode
                                          lXmlParser.java:184)
        at
org.gusdb.wdk.model.implementation.ModelXmlParser.parseXmlFile(ModelX
                                          mlParser.java:71)
        at
org.gusdb.wdk.model.implementation.ModelXmlParser.main(ModelXmlParser
                                          .java:412)

I think my classpath is correct. In it I specified the path of
xercesImpl.jar that should be the archive of my class.
Can anyone help me?
Thanks
Federica