error with loadbalancing configuration

Hi

I am getting below error when trying create replica schedule.

2014-06-20 13:44:50,400 ERROR [ajp-bio-8011-exec-1] com.infoengine.procunit.adapter.ConnectionManager - Load balancing failed.

2014-06-20 13:44:51,414 ERROR [ajp-bio-8011-exec-1] com.infoengine.procunit.adapter.ConnectionManager - Load balancing failed.

2014-06-20 13:44:51,414 ERROR [ajp-bio-8011-exec-1] com.infoengine.procunit.adapter.ConnectionManager - Load balancing failed.

2014-06-20 13:44:51,414 ERROR [ajp-bio-8011-exec-1] com.infoengine.IeServlet - bad HTTP header: HTTP/1.0 400 Invalid request

java.io.IOException: bad HTTP header: HTTP/1.0 400 Invalid request

at com.infoengine.object.ContentHeader.<init>(ContentHeader.java:127)

at com.infoengine.object.ContentHeader.newContentHeader(ContentHeader.java:168)

at com.infoengine.object.IeMultipartInputStream.<init>(IeMultipartInputStream.java:294)

at com.infoengine.IeServlet$RequestDispatcher.run(IeServlet.java:498)

at com.infoengine.IeServlet.doGet(IeServlet.java:247)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)

it is appearing after I configure the environment as cluster env but not sure what went wrong in cluster configuration,

other things are working fine.

any guide on this to solve would be help ful.