Resolution:
Description: With IcJava 1.3 there is a new requirment to have installed the Java Server Development Kit 2.0.  This must be in your classpath.  The latest version of IcJava still requires the JSDK if you are running the IcJava Server.

The full error looks like:

InConcert IcJava 1.3 Server
   Starting IcJavaServer
     Starting Dispatcher
         Dispatcher Name = IcJavaServer
         Dispatcher Port = 61071
    Creating registry
    Creating server
    Binding server to port 61071
    Starting Content Server
        ContentServer Host = localhost
        ContentServer Port = 61072
        ContentServer Directory = c:\InConcert\icjava1.30
    Creating Content Server Port 61072
    Starting Content Server
Error: Cannot create servlet engine socket
javax/servlet/ServletRequest

Stopping server..
java.lang.NoClassDefFoundError: javax/servlet/ServletRequest
   at IcJavaServer.main(IcJavaServer.java:257)

To fix the problem go to Sun and download the needed the JSDK.  The servlet.jar must be called out explicitly in the CLASSPATH.