OLE DB Error

Hello,

I have a Delphi application using DBExpress do access a MS SQL Server 2005 database.
The problem is that everytime a database error (primary key violated, field cannot be null, etc.) occurs it returns an OLE DB Error. That's the only message I get.

Is there any way I can get the real message error?

I've heard something that changing a database server parameter force the database to return the correct error.

My application running in a different database server returns the correct message. I just can't figure out what's the parameter.

Thanks in advance,