Error while publishing Java EE application to WebSphere Server v8.5.5 in Eclipse. "The name parameter cannot be null"

When I want to publish my Java EE application to WebSphere server i get a following error:

Server configuration seems to be ok - server status is displayed.

Same application deployed on Tomcat works just fine.

Any ideas what could be causing this problem?

Using:

• Eclipse LUNA SR2 IEE
• IBM WebSphere Application Server V8.5X Developer Tools for Eclipse Luna