and yes i hve hosted the site in two differnt hosts just for testing the website
@knut
I checked it only the gantry plugin is responsible . BUt without the gantry plugin the theme would not work.
I even installed wordpress 3.2 and checked so i stil get the same error.
I tried i stil get the same error
can u pls tel me how to deactive the gantry plugin cos im unable to use the wp-admin login
no i did not.. Few days back i updated the plugins but it was working fine but this just happened all of a sudden