We apologize for the delay.
Maybe the reason for this error is that the database or part of the database has not been successfully upgraded, but we don't know how this could happen.
Nevertheless, to fix this, we suggest you do the following:
- delete from sf_DataAccessVariables
table in the database the record with SchemaVersion
- restart the application.
The above should cause that part of the database related to the membership users to be upgraded.
We hope this will fix your project. But if you continue getting this error, could you please send us your project with the database, so we could investigate it locally.
Sorry for the inconvenience.
the Telerik team