This problem was reported to the team 3 days ago by Tony but issue was not created for some reason.

Steps to reproduce:
- Create StockService sample project.
- Deploy it.
- Deployment fails with the following output:
...
deployment started : 0%
Deploying application in domain failed; Error loading deployment descriptors for module [StockQuoteService5] -- Invalid
ejb jar [StockQuoteService-ejb.jar]: it contains zero ejb. 
Note: 
1. A valid ejb jar requires at least one session, entity (1.x/2.x style), or message driven bean. 
2. EJB3+ entity beans (@Entity) are POJOs and please package them as library jar. 
D:\Sun\Temp\StockQuoteService5\StockQuoteService5\nbproject\build-impl.xml:182: Deployment error:
The module has not been deployed.
See the server log for details.
BUILD FAILED (total time: 5 seconds)

There is a workaround for this problem - restart IDE. But if you enable security or change the security mechanism after
restart you will need to restart IDE again ... So, this workaround helps temporarily.