I would like to know if anyone trying these steps gets the same problem I have.

1) Create a form class based on form with a grid on it.
2) create a form based on your form class.
3) open a table in the load method.
4) set the grid RecordSource and column ControlSource.
5) run form.

I get:
Error loading file - record 3 etc....

If I open the table in the Data Environment the form runs fine.

Is this a bug in 6.0?