Access XP, Continuous Forms, Record position

First the data is comming from a SQL 2000 database.

I have a parent form with a subform.

The subform is showing records directly from a table and it's default view
is set to continuous forms.

The parent form has add, edit and delete buttons. The add and edit buttons
bring up an edit window so the user can modify the data.

After and add/edit window is closed I call subform.Requery so that the
subform reflects the addition or edit that the user made.

I would like the new record or the edited record to now be selected on the
subform.

As an example...after a new record is added I call
subform.Form.Recordset.MoveLast. Which does indeed select the last record
in the list of continuous forms.

The problem is if I then try to edit that record in that subform (just a
CheckBox in this case) Access blows up completely and has to repair the
database.

Where have I gone wrong?

Kyle!