well I solved it, if anyone else is having this issue, it is a preoblem with the user that didn't exist, so here you solve it.
CREATE LOGIN [NT AUTHORITY\Servicio de Red] FROM WINDOWS
GO
USE [Your BugTracker.NET Data Base]
GO
CREATE USER [Servicio de Red] FROM LOGIN [NT AUTHORITY\Servicio de Red]
GO
GRANT CONNECT TO [Servicio de Red]
GO
EXEC sp_addrolemember 'db_owner', 'Servicio de...
2009-07-07 15:00:19 UTC in BugTracker.NET