You said you are upgrading so I take it you are re-writing the calls to the Fox backend to run on the SQL backend ( you mean a SQL Server right?). Foxpro SQL calls are only about 80-90% compatible with SQL by ANSI standards. Are you making calls to the backend through a CDatabase class wit the EXECSQL function? If so , review the syntax of the old Fox call and make sure it translates over to SQL Server.