[news.eclipse.newcomer] running application doesn't create .jar file

[lauragarcia_b@xxxxxxxxx (lauragb)]

I want to run J2ME applications on a Mac, I am currently trying to 
integrate the Mpowerplayer SDK with Eclipse, and I have followed the 
instructions on this site
http://www.urbanhill.net/midp/

but when I run the application, it doesn't generate the .jar file, so it 
doesn't work.

Do you have any idea of why it happens?

Thanks again.