I have a form that displays individual customers. My application allows users to have multiple instances of this form open at any one time. Each form has a private datasession and has buffering set to 5. The form has the usual step forward and back buttons to allow users to step through customers. The form also has a filter button which calls a modal form to collect criteria for filtering the underlying table. The criteria is returned as a string which is then used to build a temporary index and thereby allow users to filter the underlying table and step through only those customers meeting the criteria.

This works fine when I have a single customer form open. When I have two customer forms on screen the index command errors with "Command cannot be issued on a table with cursors in table buffering mode (Error 1579)". I have set buffering to 1 before the index is built and reset it afterwards, but this does not help.

It appears that even though the 2 forms are operating with private datasessions the index that is being built in one form is interfering with the underlying table in the second form. Is this to be expected?

Thanks
Barry Sutton