This is expected as you did not include registration*.jar in CLASSPATH. But this does indicates that the class file you have is okay. One other thing I would recommend to try is to run the installer with -javahome option pointing to a valid JDK directory.
HTH
Sathyan
[Message sent by forum member 'scatari' (scatari)]
http://forums.java.net/jive/thread.jspa?messageID=346852