I need to use JRun in my current project. I downloaded & installed it . But when I tried to start it gives the following error. I alreday installed the JDK 1.5 and classpath is set.

C:\JRun4\bin\jrun.exe -nohup -start
Starting Macromedia JRun 4 (Build 61650), admin server
[1]java.lang.NoSuchMethodException: setURL
        at com.sun.jmx.mbeanserver.StandardMetaDataImpl.forbidInvokeGetterSetter
(StandardMetaDataImpl.java:493)
        at com.sun.jmx.mbeanserver.StandardMetaDataImpl.invoke(StandardMetaDataI
mpl.java:406)
        at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(MetaDataImpl.java:220)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultM
BeanServerInterceptor.java:815)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:784
)
        at jrunx.kernel.JRun.startServer(JRun.java:557)
        at jrunx.kernel.JRun.<init>(JRun.java:476)
        at jrunx.kernel.JRun$1.run(JRun.java:329)
        at java.security.AccessController.doPrivileged(Native Method)
        at jrunx.kernel.JRun.start(JRun.java:326)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at jrunx.kernel.JRun.invoke(JRun.java:180)
        at jrunx.kernel.JRun.main(JRun.java:168)
[0]javax.management.ReflectionException: Cannot invoke getter or setter (setURL)