The custom tool ‘MSLinqToSQLGenerator’ failed. Unspecified error

I kept getting this error “The custom tool ‘MSLinqToSQLGenerator’ failed.  Unspecified error.   For me, this was caused when I was using partial classes and had several using statements at the top of the file: using System.Data.Linq; using System.Data.Linq.Mapping; using System.Data; using System.Collections.Generic; using System.Reflection; using System.Linq; using System.Linq.Expressions; using System.ComponentModel; using System; {namespace} {code} To [...]

Tags: .NET Framework, C#, Linq