Hi,
error Cannot access to select table will occur if you re-populate your data source that bind to any control (ex. cursor to combobox) without first set unbind it (rowsource = ""). It happend because VFP always destroy the cursor before it re-populate it.
Therefore, to solve you problem, either you change your cursor alias name (if it is for another control but same data) or unbind your combobox and re-bind.

HTH