The command "Set Field Titles" may give you an error: "Invalid table name" in 4D 2004 even though this database has worked in past versions and has been upgraded to 4D 2004. The problem may be an illegal character in the field name. The field names must start with an alpa character (a-z) and may not contain arithmetic funcitons such as "+" or "-"or even "#". It has always been recommended not to use these characters in your naming convention in past versions of 4D. Now, with the way 4D 2004 tokenizes, this convention is not only recommended but is now required.