java.lang.VerifyError: class: com/lutris/dods/store/doml/DOMLProjectFactory

Hi!
Earlier I was working on Enhydra 3.1. Now I am using Enhydra 5.0. I m trying to generate the data layer with version 5.0 jars. I m trying to run ant. The dods step in ant gives the following error...

Regenerating DODS files from D:\myapps\webspec\src\org\waterford\webspec.doml...
     [dods] java.lang.reflect.InvocationTargetException: java.lang.VerifyError: (class: com/lutris/dods/store/doml/DOMLP
rojectFactory, method: createProject signature: (Ljava/io/File;)Lcom/lutris/dods/store/doa/DODSProject;) Incompatible ob
ject argument for function call
     [dods]     at com.lutris.dods.store.doml.DOMLFactory.readDOML(DOMLFactory.java:73)
     [dods]     at com.lutris.dods.store.Store.readDOML(Store.java:180)
     [dods]     at com.lutris.dods.store.Store.read(Store.java:164)
     [dods]     at com.lutris.dods.builder.engine.Builder.run(Builder.java:567)
     [dods]     at com.lutris.dods.builder.engine.Builder.main(Builder.java:310)
     [dods]     at java.lang.reflect.Method.invoke(Native Method)
     [dods]     at com.lutris.ant.taskdefs.Dods.execute(Unknown Source)
     [dods]     at org.apache.tools.ant.Task.perform(Task.java:319)
     [dods]     at org.apache.tools.ant.Target.execute(Target.java:309)
     [dods]     at org.apache.tools.ant.Target.performTasks(Target.java:336)
     [dods]     at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
     [dods]     at org.apache.tools.ant.Project.executeTargets(Project.java:1250)
     [dods]     at org.apache.tools.ant.Main.runBuild(Main.java:610)
     [dods]     at org.apache.tools.ant.Main.start(Main.java:196)
     [dods]     at org.apache.tools.ant.Main.main(Main.java:235)

BUILD FAILED
file:D:/myapps/webspec/build.xml:136: java.lang.reflect.InvocationTargetException

I have made sure that I m using the Enhydra 5.0 jars in system classpath. 
Has anybody encountered a similar error? Pls help me...

Thanks
Prakash