From where have you downloaded the SofiaCarRental demo? All the latest OpenAccess example projects can be found in our SDK which can be downloaded from here
. We have an extensive set of very comprehensive examples that cover most of the technologies available for a .NET developer.
Could you please provide me with some more details about the issue, what is the exact exception thrown and steps to reproduce?
Regarding the database, you can use either SQL Server Epxress or SQL Server 2005 or greater. Still I would strongly recommend that you use the SDK for examples, because we will be introducing new samples there regularly. Please note that the Q2 release will be available by the end of week which will contain a new version of the SDK with a couple of new examples.
I hope this helps.
the Telerik team
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