Can't Create OC4J Instance

Hi,
Oracle Application Server 10.1.3.3.0
While creating new OC4J instance we got the following error:
"Creation of OC4J instance "App" failed due to the error: Caught exception calling invoke on oc4j:name=Singleton,type=OpmnConfig"
Any ideas ?
Thanks in advance :)

I started restarting the complete application server... It stopped forcefully and then never started...
Sorry to disappoint you, but I reinstalled the complete thing :)
Aalap Sharma :)

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