Looking for the cause of the following error message as it seems to be quite vague.

Portal application gets the following error msg...

[org.springframework.webflow.engine.support.Transit ionExecutingFlowExecutionExceptionHandler] - Handling flow execution exception org.springframework.webflow.execution.FlowExecutio nException: Exception thrown in state 'X' of flow 'Y''

also

[org.springframework.webflow.engine.support.Transit ionExecutingFlowExecutionExceptionHandler] - Exposing flow execution exception root cause
java.lang.IllegalStateException: A flow execution action URL can only be obtained in a RenderRequest using a RenderResponse.

Anyone had this issue before?