Simple Web App not working with JBoss

*Hi Experts:*

I am using TOMCAT_4.0.3 (bundled with JBOSS3.0.0_) and using IntelliJ-IDEA as my IDE environment.

On one of my machine I created a WEB-APP kithany.war. It was working fine on this machine.

Later when I copied this kithany.war to other machine and put under server/default/deploy directory and then ran Jboss on which I get following error - wonder why?

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WHat is wrong on this...? Any related information on above is appreciated.

THANKS!