This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Right click on each of your EJB projects and go to "Java JAR Dependencies". Make sure you have set up the proper dependencies here............your project references are only valid for compile time. The Java JAR Dependencies create entries in your Manifest.mf for runtime.