This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
The error says that it cannot find this class: com.retek.rsm.external.service.SecurityDisplayableReferenceServiceEjb
Did you spell it correctly? If so, where does that class exist? And where is the JAR containing that class?