ant start STOPS showing build successful in DEMO

[premi]

I am playing around with it as a step to implement ofbiz. As a step towards it I got the lastest trunk. Whenever I start by calling ant start in the shell, after a while all of sudden the ant job finishes and says build successful. The process then stops and I have to restart. Is this with the demo version ? How can I get away with it?
Thanks,
Rgrds
Prem

[Premi]

Any help on this ? When I start with ant start... it goes on for some time , I am able to access the site and then all of a sudden it just stops saying ant build successful and exits. I am looking at the build but if any pointers .. it would be appreciated.

Thanks
Premi