The problem you face is because of redirection. i think mod_rewrite is not enabled in your server. try to contact the service provider and ask weather mod_rewrite is enabled in your account...

Thanks Thuvalpakshi,

I tried with the mod rewrite test here, http://docs.elgg.org/wiki/Mod_rewrite_test

I get 404 error too, I think you are probably right, I'll check with the agent,

BR,

Nam

Can you SSH to your server?