acts_as_solr plugin not working properly in rails postgresql

Hi,

I have implement books search application in ruby on rails with solr server search.

I am using rails 2.3.2 , postgresql-8.3.11 in CentOS and acts_as_solr plugin. I followed the instruction on site URL below:

When I run rake solr:start I am getting error as

Exception in thread "main" java.lang.NoClassDefFoundError: RadRails Caused by: java.lang.ClassNotFoundException: RadRails         at java.net.URLClassLoader$1.run(URLClassLoader.java:217)         at java.security.AccessController.doPrivileged(Native Method)         at java.net.URLClassLoader.findClass(URLClassLoader.java:205)         at java.lang.ClassLoader.loadClass(ClassLoader.java:319)         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)         at java.lang.ClassLoader.loadClass(ClassLoader.java:264)         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332) Could not find the main class: RadRails. Program will exit.

Kindly help me to solve and run the simple application using apache solr. Thanx in advance.