When I type "helloworld into the search box and select helloworld-rs, I get

"Invalid project description".

The expected result is

1. lick Finish. This downloads the helloworld application and its Maven dependencies.
2. Once all the dependencies are downloaded, a dialog appears to tell you that your project is ready. Click Finish.
3. In the Servers tab, select Red Hat JBoss EAP 7.0 [Stopped] and click the green start button to start the JBoss EAP server.