Thank you for getting back to me.
Are you using the default database that comes with Sitefinity (~/App_Data/Sitefinity.mdf
)? Sometimes there might be issues relating to the use of the provided database. I would suggest that you create your own database in your SQLEXPRESS server. After you create it go to Security/Lagoons and make sure that the NT AUTHORITY\SYSTEM has owner mappings to the database (see attached image). Then when you create the connection string choose the SQL Server 2005/2008. Click the Use Windows Authentication
checkbox and for the server use localhost\SQLEXPRESS, and enter the name of your database.
Furthermore can you check if the ASP.NET worker process has full access to the App_Data
directory of your blank project (refer to attached image). If not provide the process with full control.
the Telerik team