ServiceManagerClient install problem

[JP Bonn]

I'm trying to run soap under JRun 3.0.  I followed the installation
directions for JRun (substituting soap.war in place of pointing to the
directory).  I can go to the rpcRouter URL and get the "post not get"
message so everything appears OK up to that point.

If I try running the org.apache.soap.server.ServiceManagerClient I get:
Ouch, the call failed:
    Fault Code   = SOAP-ENV:Server.Exception:
    Fault String = java.lang.NoSuchMethodError

Any ideas as to what I may have done wrong?