1 - Make sure that steps to generate EJB related files (in Chapter 5) have been done correctly. (Check mispelling)
2- Check XDoclet tags on top of FiboBean class were set correctly. These tags are very important to generate xml files. (You can delete the auto - generated tags and copy from Tutorial PDF File to make sure they are set correct)
I got the same problems with ComputeServlet class where there were some extra tags generated causing deployment exception.
Hope this help