if you are using same dd4t 1.3 solution for both new created publication and existing publication seems your code is fine and not issue in provider. then you can check for storage config.

1. your site storage config should be same as your http deployer config
2. check licence or licence path

if you are using same dd4t 1.3 solution for both new created publication and existing publication seems your code is fine and not issue in provider. then you can check for storage config.

1. Your site storage config should be same as your http deployer config
2. Check licence file or licence path