Could not initialize class org.apache.solr.core.SolrCore

[Cook, Jeryl]

Title: Could not initialize class org.apache.solr.core.SolrCore

I am sure this is a dumb mistake, but
i followed the set up of SOLR/tomcat 5.5.20, but i keep getting this error..

java.lang.NoClassDefFoundError: Could not initialize class org.apache.solr.core.SolrCore
        org.apache.jsp.admin.index_jsp._jspService(index_jsp.java:80)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

when viewing the admin page,i am sure i followed the install settings correctly.
any ideas?



Jeryl Cook