If you are running LiveCycle ES2 you may notice the following exception message in the server log:
2011-04-20 18:03:54,291 INFO [com.adobe.idp.dsc.workmanager.impl.ExecutableUnitWrapper] No class loader found for service: Events. Cause: com.adobe.idp.dsc.registry.ServiceNotFoundException: Service: Events not found.
This message on its own is benign, i.e. it does not indicate a problem with the LiveCycle server, and can therefore be ignored. It is an INFO level message, and not an ERROR or WARN level message which indicates the priority.
If the message does occur as an ERROR or WARN level message with other exceptions, then this should not be ignored and you should analyse the other exceptions to find the root cause of the issue.
The work manager in LiveCycle was looking for a service called “Events” in order to get its class loader to serialize/de-serialize objects (ExecutableUnit) whose definition is in that service. When it couldn’t find the class loader for the Events service, LiveCycle will continue to use the default class loader.