>I am getting the message "Illegal Seek Offset" in one of my programs. I do not actually know where the problem is in my program because there is no line of code hilighted when I get the error message. The status bar shows the open dbf in area A, which was actually opened in a previous program. Why?

After you try re-indexing (always the first thing, as Craig said), and if that does not fix it, then can you tell us your OS and network SW?