I believe I've figured it out, in my DE I had AutoOpenTables = .F. and in the init event of the DE I had This.OpenTables() as the first line of code, along with some other code. In 5.0 I believe I had to do it this way for it to work. But in 6.0 SP3 if I set AutoOpenTables = .T. and remove the This.OpenTables() from the DE init. all seems to work OK. Go figure :)