There will be errors earlier in the server.log.
You will need to post the entire log (as an attachment) for us to be able to help you out.
Strange, there really appears to be little error level logs before that.
Have you followed all instructions? There is no conflict over the "/" context root or something?
Everything is fine.
I have deployed Liferay Community Edition ROOT war, it has deployed successfully and i'm able to open page also.
But, when I deploys LifeRay Enterprise Edition ROOT war, it is deploying with the above mentioned errors.
set enable-welcome-root="false" in web subsystem.
Currently it is in 'false' only
Have you dig down to figure out, why these messages are printed;JBAS015893: Encountered invalid class name?
The letters like "|", "=" are not allowed at class name....
The error code JBAS015960 may be OK, I see these waringing messages every day, but no problem.