I downloaded the zip file. The rdl file contained in it has a date of 2/3/2017.
I am still getting the same error:
In the AcctRecMinTransDate TextBox there is this expression: =Fields!AcctRecMinTransDate.Value & " through " & Fields!AcctRecMaxTransDate.Value
But that is not retrieved in the ReportServerCatalogQuery Dataset which is the only Dataset in the report.