I Used Codesmith to generate CSLA Template. But Codesmith generates Asynchronous Factory Methods Which I dont want and which are full of 'Csla.DataPortal' does not contain a definition for 'CreateAsync'... errors.
So I want to remove all the code inside the region "#region Asynchronous Factory Methods" in the BL project or at least be able to fix the errors.
I just found out that DataPortal.CreateAsync was part of CSLA Version 4.5.
I updated the reference and my problem was solved!