I am at the jboss starting gates and am getting this error.

HTML: error 500 sun/tools/javac/Main, and then
at the console.


te=200301260037)] Started in 0m:8s:937ms
16:37:34,743 WARN [jbossweb] WARNING: Exception for /jmx-console/
java.lang.NoClassDefFoundError: sun/tools/javac/Main
at org.apache.jasper.compiler.SunJavaCompiler.compile(SunJavaCompiler.ja
va:136)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:548)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessar
y(JspServlet.java:176)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspSer
vlet.java:188)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:3
81)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:360
)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicati
onHandler.java:280)
at org.mortbay.jetty.servlet.Dispatcher.dispatch(Dispatcher.java:194)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:129)
at org.mortbay.jetty.servlet.Default.handleGet(Default.java:239)
at org.mortbay.jetty.servlet.Default.service(Default.java:153)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:360
)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicati
onHandler.java:280)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:5
53)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1717)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplication
Context.java:549)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1667)
at org.mortbay.http.HttpServer.service(HttpServer.java:862)
at org.jboss.jetty.Jetty.service(Jetty.java:497)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:759)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:923)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:776)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:
202)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:455)