Database Schema not compatible

Hi,
I get the following message when trying to run the Time Tracker pages.
The 'System.Web.Security.SqlRoleProvider' requires a database schema compatible with schema version '1'.  However, the current database schema is not compatible with this version.  You may need to either install a compatible schema with aspnet_regsql.exe (available in the framework installation directory), or upgrade the provider to a newer version. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Configuration.Provider.ProviderException: The 'System.Web.Security.SqlRoleProvider' requires a database schema compatible with schema version '1'.  However, the current database schema is not compatible ...