Iam trying to deploy my application on JBoss, I had it on weblogic before, I had built the ear using the same ant script and copied the ear into default/deploy folder. Now it gives the following exception, dunno whatz wrong ... can anyone help ???

10:41:58,702 ERROR [BaseModelMBean] Exception invoking method addChild
java.lang.IllegalArgumentException: javacc,ant,commons-collections,log4j,junit-Extension-Name
at java.util.jar.Attributes$Name.(Attributes.java:434)
at java.util.jar.Attributes.getValue(Attributes.java:97)
at org.apache.catalina.util.ManifestResource.getRequiredExtensions(ManifestResource.java:199)
at org.apache.catalina.util.ManifestResource.processManifest(ManifestResource.java:168)
at org.apache.catalina.util.ManifestResource.(ManifestResource.java:52)
at org.apache.catalina.util.ExtensionValidator.validateApplication(ExtensionValidator.java:189)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4187)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
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:324)