cannot start Load generator

I get the error that
016/06/01 11:00:47 [EngineInitializer0] ERROR com.neotys.communication.endpoint.CallImpl - com.neotys.nl.agent.transport.AgentService.startAndRegisterLoadGenerator(f98f6668-6cf8-4c2e-889a-64cbf67b4696) error while sending request
java.util.concurrent.ExecutionException: com.neotys.nl.controller.H: Failed to start Load Generator on 0.0.0.0. The Load Generator process has been created but has not registered after waiting delay (key "lg.start.delay" in agent.properties). : an error occurred while communicating with '0.0.0.0'
at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:299)
at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:272)
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:96)
at com.neotys.communication.endpoint.CallWithTimeoutImpl.callTransport(CallWithTimeoutImpl.java:49)
at com.neotys.communication.endpoint.CallImpl$EndPointHandler.invoke(CallImpl.java:50)
at com.sun.proxy.$Proxy43.startAndRegisterLoadGenerator(Unknown Source)
at com.neotys.nl.controller.av.a(av.java:309)
at com.neotys.nl.controller.p.d.d.a(d.java:419)
at com.neotys.nl.controller.p.d.d.a(d.java:131)
at com.neotys.nl.controller.p.d.c.call(c.java:121)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.neotys.nl.controller.H: Failed to start Load Generator on 0.0.0.0. The Load Generator process has been created but has not registered after waiting delay (key "lg.start.delay" in agent.properties). : an error occurred while communicating with '0.0.0.0'
at com.neotys.nl.agent.transport.AgentServiceImpl.handleLgResponseCode(AgentServiceImpl.java:233)
at com.neotys.nl.agent.transport.AgentServiceImpl.startAndRegisterLoadGenerator(AgentServiceImpl.java:208)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.neotys.communication.endpoint.EndPointsRegistryImpl.receivedRequest(EndPointsRegistryImpl.java:163)
at com.neotys.communication.endpoint.EndPointsRegistryImpl.handleDataReceived(EndPointsRegistryImpl.java:118)
at com.neotys.communication.endpoint.EndPointsRegistryImpl.dataReceived(EndPointsRegistryImpl.java:106)
at com.neotys.communication.reliable.transport.server.ReliableServerDataListener.dataReceived(ReliableServerDataListener.java:40)
at com.neotys.communication.transport.fragments.FragmentListener.dataReceived(FragmentListener.java:47)
at com.neotys.communication.transport.listener.ThreadPoolListenerExecutor$1.run(ThreadPoolListenerExecutor.java:46)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
... 4 more