Endeca:Last attempt to publish to the MDEX Engine

Question

I am working on experience manager.After creating a new content item when i tried to save changes its showing an error.like "Error: Last attempt to publish to the MDEX Engine failed" The exception is Error: com.endeca.ifcr.publish.impl.PublishException: Failed to publish to the following dgraphs: http://localhost:15002.I checked Dgraph and Agraph its running fine.Then i chechked
Agrpah.log
FATAL    10/11/13 05:27:12.570 UTC (1381469232570)    DGRAPH    {dgraph,baseline}    Error during dgraph startup: Couldn't open port 15002
WARN    10/11/13 05:26:51.500 UTC (1381469211500)    DGRAPH    {dgraph}    Exchange 2 returned "500 Internal Server Error": (Exception occurred at (INTERNAL)/esoap.xq:231:1-238:2: endeca-err:XUPD0001 : Validation failed with 4 errors
) Stacktrace:
    (INTERNAL)/esoap.xq:231:1-238:2
    C:\Endeca\MDEX\6.4.0\xquery\config.xq:137:8-137:47
WARN    10/11/13 05:26:51.953 UTC (1381469211952)    DGRAPH    {dgraph}    Exchange 3 returned "500 Internal Server Error": (Exception occurred at (INTERNAL)/esoap.xq:231:1-238:2: endeca-err:XUPD0001 : Validation failed with 4 errors
) Stacktrace:
    (INTERNAL)/esoap.xq:231:1-238:2
    C:\Endeca\MDEX\6.4.0\xquery\config.xq:137:8-137:47
Please help.
Thanks in advance

Answer 1

KannanMN's issue above looks like the dgraph hadn't started due to port 15002 already being in use (probably another Endeca instance).
Usually this error is due to the dgraph not being available for some reason - try connecting to the dgraph via the reference application on the workbench server (http://your-workbench-host-name:8006/endeca_jspref) and see if you can connect, if not check that the dgraph is up and running by looking in the dgraph logs (.\logs\dgraphs\). 
Thanks
Michael