Problem starting CorbaORB

[gavkearney]

When I start JBoss4 i get the following error when JBoss attempts to start Corba:

09:53:58,325 WARN [ServiceController] Problem starting service jboss:service=CorbaORB
java.lang.NoSuchMethodError:org.apache.avalon.framework.configuration.DefaultCo
nfiguration.(Ljava/lang/String;)V
at org.jacorb.config.Configuration.(Unknown Source)
at org.jacorb.config.Configuration.getConfiguration(Unknown Source)
at org.jacorb.orb.ORB.set_parameters(Unknown Source)
at org.omg.CORBA.ORB.init(ORB.java:337)
at org.jboss.iiop.CorbaORBService.startService(CorbaORBService.java:248)

Has anybody seen anything like this before? Any help will be greatly appreciated,

Thanks.

[gavkearney]

Sorry about that, it was a classpath problem, using older jars than i should have been