I'm trying to import data into a tabular analysis services project and I am getting the following error:
Errors in the high-level relational engine. The following exception occurred while an operation was being performed on a data source view: Method not found: 'System.Threading.Tasks.Task`1<!!0> System.Threading.Tasks.Task.FromResult(!!0)'..
Errors in the high-level relational engine. The following exception occurred while an operation was being performed on a data source view: .
An error occurred while processing the partition 'Dim_Date_d9e1ad9f-181c-452e-a82d-c95251d4d805' in table 'Dim_Date_d9e1ad9f-181c-452e-a82d-c95251d4d805'.
The current operation was cancelled because another operation in the transaction failed.
It makes no difference which table I try to import, I have tried from two different SQL 2012 instances, and a SQL 2008R2 instance as well with no success. I am a local administrator on both the database server and the development machine.
I am using:
Visual Studio 2012, Windows 8, SQL Server 2012 x64 SP1 but have also tried the stand alone install of SSDT (BIDS) on a different machine (windows server 2008 R2).
The Error occurs at the point it should import the data.
Many thanks for any assistance on this.