NoSuchMethodException using Xindice 1.0

[Chrissy Monahan]

Hey everyone. I am using the xindice webapp and using Sun jdk 1.4.2 I get the following exception when accessing the webapp over xmlrpc. I am trying to figure out how to get a stack trace but until then... Anyone seen this before and have any suggestions?

I have tried upgrading to 1.1 but can't seem to get the xmlrpc stuff I am using to work with it.

Thanks.

java.lang.Exception: java.lang.NoSuchMethodError: org.apache.xpath.compiler.OpMap.getOpMap()[I