application-j2ee-engine.xml broke from scratch

Hi:

I create a project, open to edit the application-j2ee-engine.xml by default it opens at source tab. If I want to switch to "Expert settings" tab or "General" tab this error is display:

"The source page has errors. Other pages cannot be used until these errors are corrected".

The file:

Any Idea?

What is wrong?

Thanks a lot for your time on this thread.

Rocío.