The issue you're describing is very strange, indeed. Can you, please, share with us some more details on your project setup, as the problems seem to be related more to your infrastructure (since you're mentioning Sitefinity works fine on your staging machine). Can you, please, make sure you've followed the deployment steps
from our Installation and Administration guide, and also, can you, please, check if the connection string in the App_Data->Sitefinity->Configuration->DataConfig.config points to the right instance of your Database?
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items