[rules-users] not able to debug drools flow

Hi, I am using Drools 5.0 and have create a simple application using drools flow, it runs perfectly but when trying to debug it as n drools application I get the following error: FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=AGENT_ERROR_TRANSPORT_INIT(197) ERROR: transport error 202: connect failed: Connection refused ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510) JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports initialized [../../../src/share/back/debugInit.c:690] While stack trace shows the following: java.lang.IncompatibleClassChangeError: Expected static method org.drools.eclipse.launching.DroolsVMDebugger.renderCommandLine([Ljava/lang/String;)Ljava/lang/String; at org.drools.eclipse.launching.DroolsVMDebugger.run(Unknown Source) at org.eclipse.jdt.launching.JavaLaunchDelegate.launch(JavaLaunchDelegate.java:101) at org.drools.eclipse.launching.DroolsLaunchConfigurationDelegate.launch(Unknown Source) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703) at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:866) at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1069) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) I am using eclipse 3.4 What could be the issue ? Thanks Vishal